Data Sheet

FCC ID: VO8-Q5

Operational Description

Download: PDF
FCCID_2536234

                                                                      Preliminary Datasheet
                                                                               IS2020S
                        Bluetooth 4.1 Multimedia SOC
 GENERAL DESCRIPTION
       IS2020S is a compact, highly integrated,      FEATURES
 CMOS single-chip RF and baseband IC for               Support preliminary Bluetooth v4.1
 preliminary Bluetooth v4.1 with Enhanced               function and backward compatible with
 Data Rate 2.4GHz applications. This chip is            BT3.0, 2.0 and 1.2.
 fully compliant with Bluetooth specification          ISSC’s own Bluetooth software stack for




                                                                            L
 and completely backward-compatible with                the headset or speaker application. It
 Bluetooth 3.0, 2.0 or 1.2 systems.                     supports following profiles :




                                                                   A
       It incorporates Bluetooth 1M/2M/3Mbps            - Hands Free 1.6
 RF, single-cycle MCU, MODEM, UART                      - Headset 1.1




                                                                TI
 interface, and ISSC’s own Bluetooth software           - A2DP 1.2
 stack to achieve the required BT v4.1 with             - AVRCP 1.5
 EDR functions.


                                                     EN
                                                        - SPP 1.0
       To provide the superior audio and voice         Integrated 16/32 bits DSP core running up
 quality, it also integrates a DSP co-processor, a      to 72MHz that supports:
 PLL, and a CODEC dedicated for voice and               - Dual microphone noise suppression
                                                        - Echo cancelation
                                               D
 audio applications.
       For voice, not only the basic CVSD               - SBC/AAC_LC audio format decoding
                                                        - Automatic volume control for speaker
                                       FI
 encoding and decoding but also the enhanced
 noise reduction and echo cancellation are              output
                                                       Integrated a 20-bit 98dB SNR
 implemented by the built-in DSP to reach the
                                 N


                                                        ( A-weighted) stereo DAC
 better quality in the both sending and receiving
                                                       Connections to two phones with
 sides. For enhanced audio applications, SBC
                                                        HFP/A2DP profiles
                    O



 and AAC (optional) decoding functions can be          Built-in four languages ( Chinese/
 also carried out by DSP to satisfy Bluetooth           English/ Spanish/ French) voice prompts
                   C




 A2DP requirements.                                    Ultra low power consumption under
       In addition, to minimize the external            10mA for SCO/A2DP link
 components required for portable devices, a           Capable charging voltage from an empty
  SC




 voltage sensor for battery, battery charger, a         battery and sustain a direct DC input
 switching regulator and LDO are integrated to          voltage up to 7V
 reduce BOM cost for various Bluetooth                 Charging current up to 350mA
 applications.
                                                       7 mm x 7 mm 56 QFN package
IS




                                                     APPLICATIONS
                                                       Bluetooth stereo headset
                                                       Bluetooth stereo speaker
                                                       Bluetooth stereo speaker phone
                                                       Bluetooth car audio unit




Phone: 886-3-577-8385                    Website: www.issc-tech.com           Draft 0.9 Mar 10, 2014


                                                                                                                Preliminary Datasheet
                                                                                                                                   IS2020S
                                    Bluetooth 4.1 Multimedia SOC


 Table of Contents
 1   KEY FEATURES ................................................................................................................................... 3




                                                                                                                               L
 2   PIN ASSIGNMENTS .............................................................................................................................. 6




                                                                                                          A
 3   TRANSCEIVER ................................................................................................................................... 10

 4   MICROPROCESSOR .......................................................................................................................... 11




                                                                                                       TI
 5   AUDIO .................................................................................................................................................. 12




                                                                                   EN
 6   POWER MANAGE UNIT ..................................................................................................................... 13

 7   GENERAL PURPOSE IOS .................................................................................................................. 15

 8   SPECIFICATIONS ............................................................................................................................... 16
                                                                         D
 9   PACKAGE ........................................................................................................................................... 28
                                                            FI
                                                 N
                             O
                            C
  SC
IS




Phone: 886-3-577-8385                                          Website: www.issc-tech.com                                        Draft 0.9 Mar 10, 2014


                                                                  Preliminary Data Sheet
                                                                             IS2020S
1   Key Features
        System Specification

       Compliant with Bluetooth Specification v.4.1 (EDR) in 2.4 GHz ISM band

        Baseband Hardware




                                                                           L
       16MHz main clock input




                                                                A
       Built-in internal ROM for program memory




                                                             TI
       Support to connect to two hosts ( phones, tablets…) with HFP or A2DP profiles

        simultaneously

    

                                                 EN
        Adaptive Frequency Hopping (AFH) avoids occupied RF channels

        Fast Connection supported
                                            D
         RF Hardware
                                    FI

       Fully Bluetooth 4.1 (EDR) system in 2.4 GHz ISM band.

    
                              N


        Combined TX/RX RF terminal simplifies external matching and reduces external

        antenna switches.
                   O



       Max. +4dBm output power with 20 dB level control from register control.
                  C




       Built-in T/R switch for Class 2/3 application
  SC




       To avoid temperature variation, temperature sensor with temperature calibration is

        utilized into bias current and gain control.

    
IS




        Fully integrated synthesizer has been created. There requires no external VCO,

        varactor diode, resonator and loop filter.

       Crystal oscillation with built-in digital trimming for temperature/process variations.

        Audio processor

       Support 64 kb/s A-Law or -Law PCM format, or CVSD (Continuous Variable Slope

        Delta Modulation) for SCO channel operation.


                                               -3-


                                                           Preliminary Data Sheet
                                                                    IS2020S
    Noise suppression for dual analog microphone inputs

    Echo cancelation

    SBC and optional AAC decoding

    Packet loss concealment




                                                                  L
    Build-in four languages (Chinese/ English/ Spanish/ French) voice prompts and 20




                                                          A
     events for each one




                                                       TI
     Audio Codec

 


                                              EN
     20 bit codec

    98dB SNR DAC playback

    Dual microphone input
                                        D
    Integrate headphone amplifier for 16/32Ω speakers
                                 FI

     Peripherals
                           N


    Built-in Lithium-ion battery charger
                O



    Integrate 3V, 1.8V LDO and Switching mode regulator
               C




    Built-in ADC for battery monitor and voltage sense.

    Two LED drivers
  SC




     Flexible HCI interface

    High speed HCI-UART (Universal Asynchronous Receiver Transmitter) interface
IS




     Package

    7x7mm2 56QFN package




                                            -4-


                                          Preliminary Data Sheet
                                                      IS2020S
Functional Diagram




                                          Clock PLL
                BT BDR/EDR




                                                   L
                                    MCU
               Radio transceiver




                                             A
                                          TI
                                            PMU
EEPROM



                 RAM/ROM
                                     EN
                                    DSP    CODEC
                                   D
                                   FI
                           N
              O
             C
  SC
IS




                                   -5-


                            Preliminary Data Sheet
                                    IS2020S
2   PIN ASSIGNMENTS




                                  L
                               A
                            TI
                        EN
                      D
                      FI
                  N
            O
           C
  SC
IS




                      -6-


ISSC
15SC Technologies Corp.
                                                                        Preliminary Data Sheet
                                                                                      1520208
Pin No.      vO           Pin Name                              Pin Descriptions

    1         P            VCOM      IInternal biasing voltage for CODEC
   2          I            MICN2     IMic 2 mono differential analog negative input
    3         I            MICP2     IMic 2 mono differential analog positive input
   4          I            MICN1     IMic 1 mono differential analog negative input
    5         I            MICPI     IMic 1 mono differential analog positive input
    6         P           MIC_BIAS   |Electric microphone biasing voltage
   7          I             AR       IR—channel single—ended analog inputs
    8         I             ATL      IL—channel single—ended analog inputs
    9         P           VDD_CORE   [Core 1.2V power input
                                     (GPTO, default pull—high input
   10        to             P12      1. KEY PIN for FT Test
                                     2. EEPROM clock SCL
                                     3. Clock signal for OLED
                                     (GPTO, default pull—high input
                                     1. KEY PIN for FT Test
   U         O              PL3      2. EEPROM data SDA
                                     3. Data signal for OLED
                                     [KEY PIN for FT Test
   12         I            RST_N                   .
                                     System Reset Pin
   13         P            VDD10     IVO power supply input
                                     (GPTO, default pull—high input
                                     1. FWD key when class 2 RF
   14        TO             Po_1     2. Class1 TX Control signal of external TR switch when class 1
                                       RF
                                     3. Serial flash control.
                                     (GPTO, default pull—high input
   is        to             Pa       L KEY PIN forv FT Tfest
                                     2. System Configuration,
                                       L; Boot Mode with P2_0 low combination
                                     IGPTO, default pull—high input.
   16        1O             PO4      1. NFC detection pin
                                     2. Out_Ind_0


ISSC
15SC Technologies Corp.
                                                                        Preliminary Data Sheet
                                                                                  1520208
Pin No.      vO           Pin Name                           Pin Descriptions

                                      (GPTO, default pull—high input
                                      1. NEC detection pin
   17        TO             P1_5
                                      2. Out_Ind_0
                                      3. Slide Switch Detector.
                                      [KEY PIN for FT Test
   18        1O           HCLRXD      HCT RX data

                                      [KEY PIN for FT Test
   19        TO           HCLTXD      HCT TX data

   20         P           CODEC_VO    [3.1V LDO output for CODEC power
   21         P           LDO31_VIN   [3.1V LDO input
   22         P           LDO31_VO    [3.1V LDO output
   23         P           ADAP_IN     [Power adaptor input
   24         P            BAT_IN     Battery input
   25         P           AMB_DET     [ADC analog input1
   26         P           SAR_VDD     JSAR 1.8V input
   27         P           SYS_PWR     System Power Output
   28         P            BK_VDD     Buck VDD Power Input
   29         P            BK_LX      Buck feedback input
   30         P             BK_O      Buck output
   31         I             PWR       [Multi—Function Push Button key
   32         I             LED2      |LED Driver 2
   33         I             LED1      |LED Driver 1
                                      (GPTO, default pull—high input
   34        TO             PO_0      1. Slide Switch Detector.
                                      2. UART TX_IND
                                      (GPTO, default pull—high input
                                      L. REV key
                                      2. Buzzer Signal Output
   35        TO             PO_3      3. Out_Ind_1
                                      4. Class1 RX Control signal of external TR switch when class 1
                                        RF
                                      5. Serial flash control.
   36         1             EAN       |Embedded ROM/External Flash enable
                                      [H; Embedded; L; External Flash

                                                   1s.


199C                                                                             1820208
M                                                                      Preliminary Data Sheet

15SC Technologies Corp.

Pin No.|     VO           Pin Name                          Pin Descriptions

    37        P           CLDO_O     JL2V core LDO output
    38        P           PMIC_IN    IPMU blocks power input.
    39        P           RFLDO_O    [L.28V RF LDO output
    40        P             VBG      Bandgap output reference for decoupling interference
    41        P       ULPC_VSUS      JULPC 1.2V output power, maximum loading ImA.
    42        I            xON       16MHz Crystal input negative
    43        I            xOP       16MHz Crystal input positive
    44       RP           VCC_RF     IRF power input for both synthesizer and TX/RX block
    45       TO             RIX      [RF RTX path
    46       to             Po2      (GPTO, default pull—high input     v
                                     |Play/Pause key as the default setting
                                     (GPTO, default pull—high input
                                     1. KEY PIN for FT Test
    47       TO             P20                     v     ;           ho
                                     2. System Configuration, H: Application L: Baseband(IBDK
                                     Mode)
    a3       to             P27      (GPTO, default pull—high input
                                     |Volume up key (default)
    49       to             P30      GPIQ, default pull—high input
                                     [Line—in Detector
                                     (GPTO, default pull—high input
    50       O              P05      |Volume down (defaul)
    51        P           YDD10      IVO power supply input
    52        0            AOHPR     IR—channel analog headphone output
    53        P           VDDAO      |Positive power supply dedicated to CODEC output amplifiers.
    54        0           AOHPM      (Headphone common mode output/sense input.
    55        0            AOHPL     IL—channel analog headphone output
    56        P            VDDA      |Positive power supply/reference voltagefor CODEC
    57        P             EP       lExposed pad as ground


                                                                     Preliminary Data Sheet
                                                                                 IS2020S
3   TRANSCEIVER

     IS2020S is design optimized for use in Bluetooth 2.4 GHz system. It contains a complete
radio frequency transmitter/receiver section. An internal synthesizer generates a stable clock for
synchronize with another device.


TRANSMITTER




                                                                              L
    The internal PA has a maximum output power of +4dBm with level control 20dB from




                                                                   A
amplitude control. This is applied into Class2/3 radios without external RF PA.
    The transmitter features IQ direct conversion to minimize the frequency drift. And it can




                                                                TI
excess 30dB power range with temperature compensation machine.




                                                    EN
RECEVIER
     The LNA operates with TR-combined mode for single port application.
     The ADC is utilized to sample input analogue wave to convert into digital for de-modulator
analysis. Before the ADC, a channel filter has been integrated into receiver channel that can reduce
                                             D
the external component count and increase the anti-interference capability.
     The image rejection filter is to reject image frequency for low-IF architecture. This filter for
                                      FI
low-IF architecture is implied to reduce external BPF component for super heterodyne
architecture.
     There is an RSSI signal to the processor that it can control the power to make a good tradeoff
                               N


for effective distance and current consumption.
                   O



SYNTHESIZER
                  C




     A synthesizer generates a clock for radio transceiver operation. There is a VCO inside with
tunable internal LC tank. It can reduce variation for components. A crystal oscillation with internal
digital trimming circuit provides a stable clock for synthesizer.
  SC




MODEM
     On the Bluetooth v1.2 specification and below, 1 Mbps was the standard data rate based on
IS




Gaussian Frequency Shift Keying (GFSK) modulation scheme. This basic rate modem meets BDR
requirements of Bluetooth v2.0 with EDR specification.
     On the Bluetooth v2.0 with EDR specification, Enhanced Data Rate (EDR) has been
introduced to provide 2 and 3 Mbps data rates as well as 1 Mbps. This enhanced data rate modem
meets EDR requirements of Bluetooth v2.0 with EDR specification. For the viewpoint of baseband,
both BDR and EDR utilize the same 1MHz symbol rate and 1.6 KHz slot rate. For BDR, 1 symbol
represents 1 bit. However each symbol in the payload part of EDR packets represents 2 or 3 bits.
This is achieved by using two different modulations, π/4 DQPSK and 8DPSK.




                                                - 10 -


                                                                    Preliminary Data Sheet
                                                                                IS2020S
4   MICROPROCESSOR

    A single-cycle 8-bit MCU is inside IS2020S to carry out the required Bluetooth protocols. It
can run at the range from 16MHz to a higher clock so that MCU firmware can dynamically
consider the tradeoff between computing power and power consumption. MCU firmware is
implemented in ROM (Read-Only-Memory) to minimize the power consumption of program
execution and to save the cost of external flash.




                                                                              L
MEMORY




                                                                  A
      A single-port synchronous interface is provided to memory. There are enough ROM and




                                                               TI
RAM to fulfill the requirement of processor. In addition, attached to the embedded processor bus
are a register bank, a dedicated single-port memory, and flash memory. The processor coordinates
all link control procedures and data movement using a set of pointer registers.


EXTERNAL RESET
                                                    EN
     A watchdog timer capable of reset the chip. It has an integrated Power-On Reset (POR)
                                             D
circuit that resets all circuits to a known power-on state. This action can also be driven by an
external reset signal that can be used to externally control the device, forcing it into a power-on
                                     FI
reset state. The RST signal input is active low and no connection is required in most applications.
                               N


REFERENCE CLOCK
     IS2020S is composed of an integrated crystal oscillation function. It used a 16 MHz external
                   O



crystal and two specified load capacitors that a high quality system reference timer source is
obtained. This feature is typically used to remove the initial tolerance frequency errors associated
                  C




with the crystal and its equivalent load capacitance in mass production. Frequency trim is achieved
by adjusting the crystal load capacitance through on-chip trim capacitors Ctrim integrated in chip.
     The value of trimming capacitance is around 200fF per LSB at 5 bits word, therefore the
  SC




overall adjustable clock frequency is around 40 KHz.

     Ctrim =200fF * (1~31)
IS




                                                - 11 -


                                                                    Preliminary Data Sheet
                                                                                IS2020S
5   AUDIO

    There are several stages for input and output that all can be programmed for varying gain
response characteristics. At the microphone input side, you may use single-end input or differential
input. One critical point in maintaining a high quality signal is to provide a stable bias voltage
source for the condenser microphone’s FET. DC blocking capacitors may be used at both positive
and negative sides of input.     Internally, this analog signal is converted to 16-bit 8 kHz linear




                                                                              L
PCM data.
     The voice data taken from common memory is converted to an analogue value by a DAC. A




                                                                  A
multistage amplifier drives the audio signal and provides a differential signal between Line_out+
and Line_out-. The output amplifier is capable of driving a speaker directly if its impedance is




                                                               TI
16/32Ω.


DIGITAL SIGNAL PROCESSOR


                                                    EN
     A digital signal processor (DSP) cooperates with MCU to deal with audio section. It provides
audio processing with some advanced features. The DSP includes the capability to cancel the
acoustic echo that may be present in a headset or speaker. All processing is performed by a DSP
                                             D
with low power consumption. This technique will most effectively cancel the incoming echo
signal without impact to the desired voice signal. An outgoing signal to the speaker which level
                                     FI
exceeds a certain threshold (and therefore deemed likely to create echo) will result in suppression
of signal along the input path from the microphone. Filtering is also applied and provides for a
smoother transition for a more natural user experience.
                               N


DUAL MICROPHONE NOISE REDUCTION
                   O



     This noise reduction technology virtually eliminates distracting background noise, including
                  C




crowds, wind, vehicles and other interruptions to your conversations. It support dual microphone
inputs that one for main vocal input and the other for background noise. Of course, it can use only
main vocal input for single microphone application.
  SC




CODEC
     This built-in codec contains a high Signal/Noise performance. This built-in codec contains a
analog to digital converter (ADC), a digital to analog converter (DAC) and additional analog
IS




circuitry.
     Signal to noise ratio (SNR) is the supreme facts of a CODEC. It provides a very low noise
level for background white noise. The main music stream and vocal become clear with this low
noise level.




                                                - 12 -


                                                                                  Preliminary Data Sheet
                                                                                                IS2020S
6     POWER MANAGE UNIT

     The PMU inside the chip has two main features, charging a Li-ion battery and some regulators
for voltage translation. A power switch is used to switch over the power source between battery
and adaptor automatically. It also provides two LED drivers.


CHARGING A BATTERY




                                                                                                L
     IS2020S includes a built-in battery charger optimized for use with lithium polymer batteries.




                                                                               A
The charger features a current sensor for charging control, user programmable current regulation
and high accuracy voltage regulation.




                                                                            TI
     The charging current is configured in the EEPROM. Whenever the adaptor is plug-in,
charging circuit is active. Reviving, Pre-charging, Constant Current and Constant Voltage modes
are implemented and re-charging function is also included. The maximum charging current is



                                                                EN
350mA.

Charging curve
                        Reviving                                                                  Recharge
                                   Pre charge
                                                       D
     CV Voltage 4.2v     Mode                   Constant Current Mode   Constant Voltage Mode      Mode
                                     Mode


    Recharge Voltage
                                                FI
          4.1v

    CC current 0.5c
                                    N


    CC Voltage 3.0v
                         O



    Recharge current
         0.25c
                        C




    Precharge Voltage
          2.5v

    Precharge Current
          0.1c
  SC




    Reviving Current
         2mA



VOLTAGE MONITING
IS




     A 10-bit Successive-Approximation-Register analog to digital converter (SAR ADC) provides
one dedicated channel for battery voltage level detection. The warning level is programmable and
stored in the EEPROM. This ADC provides a good resolution that MCU can control the charging
process.


VOLTAGE REGULATION
     The built-in voltage converter is used to convert the battery or adaptor power for power
supply. It also integrates hardware architecture to control power on/off procedure. The built-in
programmable LDOs provide power for codec and digital IO pads. It is used to buffer the high

                                                           - 13 -


                                                                  Preliminary Data Sheet
                                                                               IS2020S
input voltage from battery or adapter. This LDO need s 1uF bypass capacitor.


SWITCHING REGULATOR
    There is a bulk voltage convert generating the voltage for RF and baseband core power. This
converter has good conversion efficiency to save power and fast transient response.




                                                                               L
LED DRIVER




                                                                 A
     There are two dedicate LED drivers to control the LEDs. They provide enough sink current
that LED can be connected directly with IS2020S.




                                                              TI
                                                   EN
                                            D
                                    FI
                              N
                  O
                 C
  SC
IS




                                               - 14 -


                                                                  Preliminary Data Sheet
                                                                              IS2020S
7   GENERAL PURPOSE IOs

      IS2020S provides six general purpose IOs for keys setting and saved in the EEPROM. The
first button must be power key. The power on/off functions only can be set on MFB pin. There are
four different operations for every button. They are short click, long click, double click and
combinations.




                                                                              L
                                                                 A
GPIOs for Buttons
 Button Name        Default Functions                        GPIO name        Pin




                                                              TI
 Button 0           Power / MFB                              MFB              27
 Button 1           Volume UP                                P2_7             42



                                                  EN
 Button 2           Volume DN                                P0_5             43
 Button 3           PLAY/PAUSE                               P0_2             40
 Button 4           REV                                      P0_3             30
                                            D
 Button 5           FWD                                      P0_1             12
                                    FI

     Some signals were generated to indicate or control outside devices. The most popular
applications are NFC for easy pairing, external audio amplifier for louder speaker and buzzer for
                              N


indication.
                  O



GPIOs for added functions
                 C




 Functions                      GPIO configurable features          Pins
 Slide switch                   P0_0                                44
 Buzzer                         P0_4 / P2_0 / P0_3                  45 / 41 / 30
  SC




 NFC detect                     P0_4 / P1_5                         45 / 13
 External AMP enable            P1_6 / P1_5                         33 / 13
IS




                                              - 15 -


                                                                Preliminary Data Sheet
                                                                           IS2020S
8   SPECIFICATIONS

Table 1: Absolute Maximum Voltages
Symbol           Parameter                               Min             Max           Unit
VDD_CORE         Digital core supply voltage             1.14            1.26           V
AVDD_PLL         PLL supply voltage
VCC_RF           RF supply voltage                       1.28                           V




                                                                         L
AVDD_SAR         SAR ADC supply voltage                  1.62            1.98           V
VDD_AUDIO CODEC supply voltage                            2.7             3.0           V




                                                              A
VDD_IO           I/O supply voltage                                       3.6           V
BK_VDD           BUCK supply voltage                                      4.5           V




                                                           TI
3V1_VIN          Supply voltage                                           4.5           V
BAT_IN           Input voltage for battery                3.0             4.5           V
ADP_IN           Input voltage for adaptor                4.5             7.0           V


                                                   EN
TSTORE           Storage temperature                      -40            +85           ºC


Table 2: Recommended operate condition
                                          D
Symbol         Parameter                                Min      Typical        Max     Unit
VDD_CORE       Digital core supply voltage              1.14       1.2          1.26     V
                                  FI

AVDD_PLL       PLL supply voltage
VCC_RF         RF supply voltage                                  1.28                    V
                             N


AVDD_SAR       SAR ADC supply voltage                   1.62       1.8          1.98      V
VDD_AUDIO CODEC supply voltage                           2.7       2.7           3.0      V
VDD_IO         I/O supply voltage                        2.7       3.0           3.3      V
                 O



BK_VDD         BUCK supply voltage                        3                      4.5      V
3V1_VIN        Supply voltage                             3                      4.5      V
                C




BAT_IN         Input voltage for battery                  3                      4.2      V
ADP_IN         Input voltage for adaptor                 4.5                      7       V
TSTORE         Storage temperature                      -10       +25           +60      ºC
  SC
IS




                                               - 16 -


                                                          Preliminary Data Sheet
                                                                     IS2020S
Table 3: BUCK switching regulator
 Parameter                                         Min     Typical    Max    Unit
Input Voltage                                      3.0       3.8      4.5      V
Output Voltage   (Iload=70mA, Vin=4V)               1.7      1.8      2.05     V
Output Voltage Accuracy                                     ±5%               %
                                                                              mV
Output Voltage Adjustable Step                               50




                                                                   L
                                                                             /Step




                                                         A
Output Adjustment Range                            -0.1              +0.25     V
Output ripple                                               10          15   mVRMS




                                                      TI
Average Load Current (ILOAD)                       120                        mA
Conversion efficiency (BAT=3.8V, Iload = 50mA)               88               %



                                               EN
Switching frequency                                         800              KHz
Quiescent Current                                                    1000     μ A
Output Current (peak)                              200                        mA
                                        D
                                                                             mV/
Load Regulation (Iload = 10 ~ 100mA)                         1
                                 FI
                                                                             mA
                                                            0.03              %/V
Line Regulation (3.2V < Vin < 4.2V)
                           N


                                                            (30)             (mV/V)
                          Logic Low Voltage                           0.4      V
                  O



EN threshold
                          Logic High Voltage       1.62                        V
                 C




EN current                                                            10      nA
Shutdown Current                                                      <1      μ A
  SC
IS




                                          - 17 -


199C                                                                  1820208
Y                                                          Preliminary Data Sheet

15SC Technologies Corp.

Table 4: Low Drop Regulation
 Parameter                                          Min     Typical    Max   Unit
 Input Voltage                                      3.0                4.5    V

                          Vour conec                          2.9
Output Voitage                                                                V
                          Vour i0                             1.8

Output Accuracy (Vin=3.7V, oan=100mA, 27°C)                   +5              %
Output current (average)                                               100   mA
 Drop—out      volt
        prout vorage                                                   200   mVy
 {Isaa = maximum output current)
Quiescent Current
           .                                                 45               A
 {excluding l0ad, lisea < 1mA)
           Regulation
 Load ad Regulati                                                      40    my
 {hoaa= OmA to 100mA)
 LineRegulati
    e Regia \o.n                                              7        10    mVV
 (Vout+0.3V<Vin<4.5V)
                             Logic Low Voitage                         0.4    V
 EN threshold                       T
                             Logic High Voitage     1.62                      V
 EN current                                                            10    nA
Shutdown Current                                                       <1    J A




                                             —18—


                                                             Preliminary Data Sheet
                                                                        IS2020S
Table 5: Battery Charger
Parameter                                            Min      Typical    Max    Unit
Input Voltage                                         4.5         5.0    7.0     V
Supply current to charger only                                    3      4.5    mA
Battery trickle charge current
                                                               0.1C             mA
(BAT_IN < trickle charge voltage threshold)




                                                                        L
                           Headroom > 0.7V
Maximum Battery                                      170          200    240    mA




                                                           A
                           (ADAP_IN=5V)
Fast Charge Current
                           Headroom = 0.3V
Note: ENX2=0                                         160          180    240    mA




                                                        TI
                           (ADAP_IN=4.5V)
                           Headroom > 0.7V
Maximum Battery                                      330          370    420    mA


                                                EN
                           (ADAP_IN=5V)
Fast Charge Current
                           Headroom = 0.3V
Note: ENX2=1                                         180          220    270    mA
                           (ADAP_IN=4.5V)
                                        D
Trickle Charge Voltage Threshold                                  3              V
Float Voltage                                        4.158        4.2   4.242    V
                                   FI

Battery Charge Termination Current,
                                                                  10             %
(% of Fast Charge Current)
                             N


Note:
                   O



(1) C is set in EEPROM
(2) Headroom = VADAP_IN – VBAT
                  C




(3) ENX2 is not allowed to be enabled when VADAP_IN – VBAT > 2V

Table 6: LED driver
  SC




 Parameter                                           Min      Typical    Max    Unit
 Supply Voltage                                       1.7         1.8    1.98    V
 Open-drain Voltage                                                      5.1     V
IS




 Open-drain Current                                                      5.5    mA
 Intensity Control                                                16            step
 Current Step                                                  0.35             mA
 Power Down Open-drain Current                                            1     μ A
 Shutdown Current                                                         1     μ A




                                            - 19 -


ISSC
 15SC Technologies Corp.
                                                              Preliminary Data Sheet
                                                                       1520208
Table 7: Audio codec — Digital to Analogue Converter
T= 25°C, Vdd=3.0V, 1KHz sine wave input, Bandwidth = 20~20KHz

 Parameter (Condition)                                 Min.     Typ.    Max.    Unit

 Over—sampling rate                                             128              S
 Resolution                                             16                      Bits
 Output Sample Rate                                     8                48     KHz
 Signal to Noise Ratio Note: 1                                   96             aB
 (SNR @cap—less mode) for 48kHz
 Signal to Noise Ratio Note: 1                                   o8             aB
 (SNR @single—end made) for 48KHz
 Digital Gain                                          54               4.85    dB

 Digital Gain Resolution                                       2~6              dB

 Analog Gain                                           —28               3      dB

 Analog Gain Resolution                                          1              dB

 Output Voitage Full—scale Swing (AVDD=2.8V)           495     742.5           my rms

 Maximum Output Power (16 load)                                34.5             mW

 Maximum Output Power (329 load)                               17.2             mW

 Allowed Load (Resistive)                               8       16      0.C.    o

THD+N (160— load)                                                       0.05     %
 Signal to Noise Ratio (SNR @ 160 load)                                 96      dB
Note: (1) fy=1KHz, BAV=20~20KHz, A—weighted, THD+N < 0.01%, OdBFS signal,
Load=100KO




                                            —20 —


ISSC
 15SC Technologies Corp.
                                                              Preliminary Data Sheet
                                                                       1520208
Table 8: Audio codec — Analogue to Digital Converter
T= 25°C, Vdd=3.0V, 1KHz sine wave input, Bandwidth = 20~20KHz

 Parameter (Condition)                                 Min.     Typ.    Max.    Unit

 Resolution                                                      16             Bits
 Output Sample Rate                                     8                48     KHz
                                          BKHz                   88
  .             .          .             16KHz                   88
 Signal to Noise Fl.at\o. Note: 1        32KHz                   s8
 (SNR @MIC or Ling—in mode}
                                        44.1KHz                  87
                                         48KHz                   87             dB
 Digital Gain                                          —54              4.85    dB
 Digital Gain Resolution                                        2~6             dB
 MIC Boost Gain                                                 20

 Analog Gain                                                            60      dB
 Analog Gain Resolution                                         2.0             dB
 Input full—scale at maximum gain (differential)                 4             m¥ ims
 Input full—scale at minimum gain (differential)               800             m¥ ims
 30B bandwidth                                                  20              KHz
 Microphone mode (input impedance)                               6       10     KQ
 Microphone mode (input capacitance)                                     20     pF
THD+N (microphone input) @30mVrms input                        0.02              %
Note: (1) fy=1KHz, BAV=20~20KHz, A—weighted, THD+N < 1%, 150mVpp input




                                              >


 199C                                                                     1820208
Y                                                               Preliminary Data Sheet

 15SC Technologies Corp.

Table 9: Transmitter section for BDR
                                         .                          Bluetooth         .
 Parameter                             Min         Typ   Max           wl          Unit
                                                                  specification
 Maximum RF transmit power                         4.0   5.0          —6 to 4      dBm
 RF power variation over
temperature range with                         +2.0                                 dB
 compensation disabled
 RF power control range                            18                  216          dB
 RF power range control resolution             £0.5                                 dB
 20d$ bandwidth for modulated                      go5                S            KHz
 carrier
 ACP                   F= Fot2MHz                  42    +40           £20         dBm
                       F= FotB3MHz                 —49   —48           £40         dBm

 ’:00:62,;141 MHz      F= Eyt>SMHz                 —57   —53           £40         dBm

 Ati.,, maximum modulation             150               165      140<Affang<175   KHz
 Afome« maximum modulation             120               140          2115         KHz
 Afsevglftavg                          0.92    0.94                   20.80
 ICFT                                  4.5          8    10.5          +75         KHz

 Drift rate                            3.3          5    7.0           $20         KHz/5
                                                                                   Ous
 Drift (single slot packet)                        12                  540         KHz
 2"" harmonic content                              42                  <—30        dBm
 3" harmonic content                               45                  <—30        dBm




                                              2.


ISSC
 15SC Technologies Corp.
                                                                 Preliminary Data Sheet
                                                                           1520208
Table 10: Transmitter section for EDR
                                                                      Bluetooth
                                           Min   Typ       Max           mel      us   Unit
                                                                    specification
 Relative transmit power                         —1.2                   —4 to 1        dB
                           100 a|
                                                 2.5        5      10 for all blocks   KHz
                           freq. error
                            w
TT /4 DQPSK max            I .I
     .                     initial freq.         2.5        5      75 for all blocks   KHz
 carrier frequency
 stability                 eror
                           10 5+004
                           block freq.               5     10      75 for all blocks   KHz
                           error
                           100 a|
                                                 2.5        5      10 for all blocks   KHz
                           freq. error
                           100 1
 BDPSK max carrier         initial freq.         2.5        5      75 for all blocks   KHz
frequencystability         error
                           10 5+004
                           block freq.               5     10      75 for all blocks   KHz
                           error
Tt 4 DQPSK                 RMS DEVM                  7                   20             %
 modulation                99% DEVM              PASS                    30             %
 accuracy                  Peak DEVM                       25            <35            %
 BDQPSK                    RMS DEVM                  7                   s13            %
 modulation                99% DEVM              PASS                    20             %
 accuracy                  Peak DEVM                       20            s25            %
                           F>
                                                 <—52                    5—40          dBm
                           Fo+BMHz

 In—band      spuri
  n— .ar! spurious         Es
                           Fo—3MHz               <   53                  <40
                                                                         s             dBm
 emissions                 po
                              _                  ~40                     <40            B
                           Eo—SMHz                     6                               Bm
 Note: Fo=2441MHz          5
                              _,                 —34                     <20           dBm
                           Fo—2MHz
                           lilke                 —34                     526           dBm


                                                 Preliminary Data Sheet
                                                         IS2020S
                    F0-1MHz
                    F=
                                           -37          ≤-26      dBm
                    F0+1MHz
                    F=
                                           -34          ≤-20      dBm
                    F0+2MHz
                    F=




                                                       L
                                           -46          ≤-40      dBm
                    F0+3MHz




                                                    A
EDR differential phase encoding            100          ≥99        %




                                                 TI
                                      EN
                                  D
                                  FI
                         N
               O
              C
  SC
IS




                                  - 24 -


                                                                   Preliminary Data Sheet
                                                                           IS2020S
Table 11: Receiver section for BDR
                        Frequency                                     Bluetooth
                                       Min            Typ    Max                      Unit
                           (GHz)                                     specification
                              2.402                   -90
 Sensitivity at 0.1%
                              2.441                   -90                ≤-70        dBm
 BER
                              2.480                   -89




                                                                         L
 Maximum received signal at 0.1%
                                                       0      0          ≥-20        dBm




                                                                A
 BER
 Continuous power        0.030–2.000                  -7                 -10




                                                             TI
 required to block       2.000-2.400                  -10                -27
 Bluetooth               2.500-3.000                  -11                -27



                                                 EN
 reception (for input
 power of -67dBm                                                                     dBm
 with 0.1% BER)
                         3.000-12.75                  -7                 -10
                                        D
 measured at the
 unbalanced port of
                                      FI
 the balun
 C/I co-channel                                        6                 ≤11          dB
                                N


                         F=
                                                      -6                  ≤0          dB
                         F0+1MHz
                   O



                         F=
                                                      -6.5                ≤0          dB
                         F0-1MHz
                  C




                         F=
 Adjacent channel                                     -36                ≤-30         dB
                         F0+2MHz
  SC




 selectivity C/I
                         F=
                                                      -28                ≤-9          dB
                         F0-2MHz
 Note: F0=2441MHz
                         F=
                                                      -31                ≤-20         dB
IS




                         F0-3MHz
                         F=
                                                      -48                ≤-40         dB
                         F0+5MHz
                         F = Fimage                   -28                ≤-9          dB
 Maximum level of intermodulation
                                                  -37                    ≥-39        dBm
 interferers
 Spurious output level                            N/A                                dBm/Hz




                                             - 25 -


                                                           Preliminary Data Sheet
                                                                     IS2020S
Table 12: Receiver section for EDR
                      Freq.      Modula                           Bluetooth
                                          Min      Typ     Max                   Unit
                      (GHz)        tion                          specification
                              π/4
                    2.402                          -90
                              DQPSK
                              π/4
                    2.441                          -90               ≤-70        dBm




                                                                   L
                              DQPSK
Sensitivity at
                              π/4




                                                              A
0.01% BER           2.480                          -89
                              DQPSK




                                                           TI
                    2.402     8DPSK                -83
                    2.441     8DPSK                -83               ≤-70        dBm



                                              EN
                    2.480     8DPSK                -82
                              π/4
Maximum received signal at                         -10               ≥-20
                              DQPSK                                              dBm
0.1% BER
                                          D
                              8DPSK                -10               ≥-20
                              π/4
                                                                     ≤13
                                FI
                                                    5                            dB
C/I co-channel at 0.1% BER    DQPSK
                              8DPSK                 5                ≤21         dB
                            N


                              π/4
                  F=                               -11                ≤0         dB
                              DQPSK
                   O



                  F0+1MHz
                              8DPSK                 -5                ≤5         dB
                              π/4
                  C




                  F=                                -8                ≤0         dB
                              DQPSK
                  F0-1MHz
                              8DPSK                 -4                ≤5         dB
  SC




Adjacent
                              π/4
channel           F=                               -38.5             ≤-30        dB
                              DQPSK
selectivity C/I   F0+2MHz
                              8DPSK                -33.5             ≤-25        dB
IS




                              π/4
Note:             F=                               -29               ≤-7         dB
                              DQPSK
F0=2441MHz        F0-2MHz
                              8DPSK                -25                ≤0         dB
                              π/4
                  F=                               -32.5             ≤-20        dB
                              DQPSK
                  F0-3MHz
                              8DPSK                -27               ≤-13        dB
                  F=          π/4
                                                   -49.5             ≤-40        dB
                  F0+5MHz     DQPSK


                                          - 26 -


                                         Preliminary Data Sheet
                                                 IS2020S
                8DPSK            -43.5           ≤-33      dB
                π /4
                                 -29              ≤-7      dB
   F = Fimage   DQPSK
                8DPSK            -25              ≤0       dB




                                               L
                                            A
                                         TI
                            EN
                        D
                 FI
                N
   O
  C
  SC
IS




                        - 27 -


                            Preliminary Data Sheet
                                    IS2020S
9   PACKAGE




                                  L
                               A
                            TI
                       EN
                   D
               FI
               N
               O
              C
  SC
IS




                   - 28 -



Document Created: 2014-04-01 14:45:53
Document Modified: 2014-04-01 14:45:53

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC