Block Diagram

FCC ID: KUTQS101

Block Diagram

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FCCID_819804

PROPRIETARY INFORMATION _o IC 9 IC 4 SW1 —4 MCU RF IC Y1 U 4MHz —L— —[— c3 —2 26Mz —= c74 +3¥ if 3V IC 2 BATTERY VOLAGE " REGATOR TO ALL SECTICN MODEL:QS—101 CPL CAPITAL PROSPECT LTD MODEL : QS—101 BLOCK DIAGRAM DATE :6 JUN, 2007 PAGE : 1 OF 1

(& Cchincon SmarthF® CC1100 14 Circuit Description ADC |—| E> [0 [ 2e [ §1—|—&)—a A_ E @4 u"j —e so (GDO1) RE_P sa— "ul 4. Q (|—la s | o |__| FREQ EI % RFN | 50 SYNTHf Eoo 3 |2. n E —Iss CSn i eboo(atest) "f|—fm ——— C 5 ; ‘€ |_L eno2 / s118)] t (O0 . |&] <) |_| |¢ lap L L LELE rc osc Blas xosc t . U i# RBlas xosc_ai xosc_o2 Figure 2: GFIOO Simplified Block Diagram A simplified block diagram of GZIZOO is shown frequency synthesizer includes a completely in Figure 2. on—chip LC VCO and a 90 degree phase shifter for generating the | and Q LO signals to GBO1IIOO ifeatures a lJow—lF receiver. The the down—conversion mixers in receive mode. received RF signal is amplified by the low— noise amplifier (LNA) and down—converted in A crystal is to be connected to XOSC_Q1 and quadrature (I and Q) to the intermediate XOSC_Q2. The crystal oscillator generates the frequency (IF). At IF, the 1/Q signals are reference frequency for the synthesizer, as digitised by the ADCs. Automatic gain control well as clocks for the ADC and the digital part. (AGC), fine channel filtering, demodulation A 4—wire SPI serial interface is used for bit/packet synchronization is performed configuration and data buffer access. digitally. The digital baseband includes support for The transmitter part of GZIIOO is based on channel configuration, packet handling and direct synthesis of the RF frequency. The data buffering. 15 Application Circuit Only a few external components are required Balun and RF matching for using the GZIIOA The recommended C131, C121, L121 and L131 form a balun that application circuit is shown in Figure 3. The converts the differential RF port on 2GRIIOOJ to a external components are described in Table single—ended RF signal (C124 is also needed 14, and typical values are given in Table 15. for DC blocking). Together with an appropriate Bias resistor LC network, the balun components also transform the impedance to match a 500 The bias resistor R171 is used to set an antenna (or cable). Component values for the accurate bias current. RF balun and LC network are easily found using the SmartRF® Studio software. Suggested values for 315MHz, 433MHz and 868/915MHz are listed in Table 15. Chipcon AS SmartRF® CC1100 Preliminary Data Sheet (rev. 1.0) 2005—04—25 Page 14 of 68


Document Created: 2007-07-06 16:34:37
Document Modified: 2007-07-06 16:34:37
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