Si4702/03-C19 Broadcast FM Radio Tuner for Portable Applications Description Features The Si4702/03-C19 extends Silicon Laboratories Si4700/ 01 FM tuner family and further increases the ease and attractiveness of adding FM radio reception to mobile devices through small size and board area, minimum component count, flexible programmability, and superior, proven performance. The Si4702/03 leverage Silicon Laboratories' highly successful and patented Si4700/01 FM tuner, and are pin and software compatible to existing Si4700/01 FM tuner designs. The Si4702/03 benefits from proven digital integration and 100% CMOS process technology, resulting in a completely integrated solution. The Si4702/03 proven and highly flexible functionality caters to the subjective nature of audio preferences and variable FM broadcast environments worldwide. - The Si4703-C19 incorporates a digital processor for the European Radio Data System (RDS) and the US Radio Broadcast Data System (RBDS) including all required symbol decoding, block synchronization, error detection, and error correction functions. RDS enables data such as station identification and song name to be displayed to the user. The Si4703 offers a detailed RDS view and a standard view, allowing adopters to selectively choose granularity of RDS status, data, and block errors. Si4703 software is backwards compatible to the proven Si4701, adopted by leading cell-phone, PND, and MP3 manufacturers worldwide. The Si4702/03 device’s high level of integration and complete FM system increases quality to manufacturers, improves device yields, and simplifies device manufacturing and final testing. Worldwide FM band support (76–108 MHz) Digital low-IF receiver Frequency synthesizer with integrated VCO Seek tuning Automatic frequency control (AFC) Automatic gain control (AGC) Excellent overload immunity Signal strength measurement Programmable de-emphasis (50/75 µs) Adaptive noise suppression Volume control Line-level analog output 32.768 kHz reference clock 2-wire and 3-wire control interface 2.7 to 5.5 V supply voltage Integrated LDO regulator allows direct connection to battery - 3 x 3 mm 20-pin QFN package - Pb-free/RoHS compliant - RDS/RBDS Processor (Si4703) - Integrated crystal oscillator Applications - Cellular handsets MP3 players Portable radios USB FM radio PDAs Notebook PCs Portable navigation Consumer electronics RFGND LNA PGA Q ADC AGC 0 / 90 DSP FILTER DEMOD MPX AUDIO LOW-IF DAC DAC GPIO 32.768 kHz ROUT GPIO VA VD AFC TUNE REG XTAL OSC RDS (Si4703) RSSI CONTROL INTERFACE VIO RCLK 2.7–5.5 V LOUT RST SDIO SCLK SEN CONTROLLER I ADC FMIP AMPLIFIER Si4702/03 Headphone Cable Si4702/03-C19 Broadcast FM Radio Tuner for Portable Applications Selected Electrical Specifications Parameter Symbol Input Frequency Test Condition Min fRF Typ Max Unit 76 — 108 MHz Sensitivity (S+N)/N = 26 dB — 1.1 — µV EMF Input IP3 |f2 – f1| > 1 MHz; f0 = 2 x f1 – f2 AGC disabled — 106 — dBµV EMF Adjacent Channel Selectivity ±200 kHz — 50 — dB Alternate Channel Selectivity ±400 kHz — 70 — dB — 32.768 — kHz –200 — 200 ppm 72 80 90 mVrms RCLK Frequency RCLK Frequency Tolerance Audio Output Voltage Audio Band Limits 30 — 15k Hz Audio S/N ±1.5 dB — 59 — dB Audio THD — 0.1 0.5 % 2.7 — 5.5 V Supply Voltage VD, VA Interface Supply Voltage VIO 1.5 — 3.6 V Ambient Temperature TA –20 25 85 C Supply Current IAD — 14.4 — mA Powerdown Current IPD — 8.5 12 µA Seek/Tune Time SCLK Frequency fCLK fSCL Powerup Time — — 60 ms/channel 3-wire operation — — 2.5 MHz 2-wire operation — — 400 kHz From powerdown — — 110 ms Package Information 5 VA RST GPIO3 4 17 16 15 GND 14 LOUT GND PAD 13 ROUT 12 GND 6 7 8 9 10 VIO GND GPIO2 3 18 RCLK RFGND GPIO1 2 19 SDIO FMIP 20 SCLK 1 SEN NC NC Pin Assignments 11 VD Table 1. Package Dimensions Symbol A A1 b c D D2 e E E2 FM Tuner Min 0.50 0.00 0.18 0.27 1.65 1.65 Millimeters Nom 0.55 0.02 0.25 0.32 3.00 BSC 1.70 0.50 BSC 3.00 BSC 1.70 Symbol Max 0.60 0.05 0.30 0.37 1.75 Min f L L1 aaa bbb ccc ddd eee 0.35 0.00 — — — — — Millimeters Nom 2.53 BSC 0.40 — — — — — — Max 0.45 0.10 0.10 0.10 0.08 0.10 0.10 1.75 Copyright © 2008 by Silicon Laboratories Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders 4.3.08 Smart. Connected. Energy-Friendly Products Quality Support and Community www.silabs.com/products www.silabs.com/quality community.silabs.com Disclaimer Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. 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