Block Diagram

FCC ID: SQ9XKT1409

Block Diagram

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FCCID_2341005

U1 Xtal 16.384MHz Y1 Xtal 32.768kHz Y2 2408, 2428, 2450MHz KEY LED RF Module Speaker D1,D2,D3,D4,D5,D6 U2 LS1 S1,S2 Xtal 26MHz X1

EM9201 1. Introduction The EM9201 is a highly integrated multi-channel RF transceiver designed for low-power and low-voltage wireless applications in the world wide ISM frequency band at 2.400 - 2.4835GHz. EM9201’s TX-chain features a completely on-chip GFSK transmitter based on direct synthesis of the RF-signal directly applied to the 2.4GHz power amplifier. The output power can be digitally tuned in a wide range (-18 dBm …+3 dBm) in order to optimize the current consumption for a wide set of applications. The on-air transmission rate is 1Mb/s. Thanks to the very robust low-IF architecture employed in the RX-chain, the EM9201 can operate without the need of expensive external filters for the blocking of undesired RF-signals. EM9201 features a fully on-chip low noise, high sensitivity 2.4 GHz front-end. The fast configurability of the integrated frequency synthesizer makes the EM9201 also suitable for frequency hopping systems. Employing a properly designed antenna with a differential real impedance of 200 Ohm, there is not need of further external components to achieve the on-air communication with the EM9201. Adaptation to any other antenna type is anyway ensured through a properly designed matching network. RF Modules These features make the EM9201 an attractive choice for a broad range of wireless applications, where power-efficient battery operation is a needed. Thanks to the cheap bill-of-material and the few of-the-shelf components required, EM9201 can make the difference in terms of system cost. 1.1 Block diagram 11 6 5 4 7 VSS BIAS_R VSS VSS VDD Battery Level VSS RF Bias Bandgap Digital LDO 8 12 VSS Detector to supply of VCC2 10 on- chip blocks Power Management Xtal 19 XTAL1 Xtal 17 26MHz 20 Osc AVSS_RF X1 XTAL2 AVSS_PLL1 21 9 2408, 2428, EM 9201 AVSS_PLL2 2450MHz 23 DATA_ FPGA Baseband ANTP 16 Ant. Matching Processing Frequency Synthesizer 15 Circuit C9, C10, CK_ FPGA 22 ANTN L1 & Control 13 IF Filter AVDD_PA Logic & Demodulator 14 AVSS_PA IRQ 24 18 CS 3 SCK SPI 2 SDI 1 SDO Figure 1.1: Simplified block diagram. Not all external components shown Copyright 2012, EM Microelectronic-Marin SA 4 www.emmicroelectronic.com 9201-DS.doc, Version 3.0, 13-Sep-12


Document Created: 2014-07-23 08:55:22
Document Modified: 2014-07-23 08:55:22
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