Si4704/05-D50 BROADCAST FM RADIO RECEIVER FOR CONSUMER ELECTRONICS Features Worldwide FM band support Automatic gain control (AGC) (64108 MHz) Integrated FM LNA RDS/RBDS decoding engine Image-rejection mixer (Si4705 only) Frequency synthesizer with Lowest power consumption integrated VCO Received signal quality indicators Low-IF direct conversion with no On-chip tuned resonance for external ceramic filters embedded antenna support 2.7 to 5.5 V supply voltage Ordering Information: Multipath detection and mitigation Dual 1.8 and 2.7 V power supplies See page 27. FM Hi-cut control Stereo audio out 2 Advanced FM stereo-mono blend I S Digital audio out Advanced audio processing 20-pin 3 x 3 mm QFN package Pin Assignments Not EN 55020 compliant* Pb-free/RoHS compliant Si4704/05-GM *Note: *For consumer electronics applications that require EN 55020 compliance, (Top View) use Si4704/05-D60. Applications Cellular handsets Personal navigation devices (PND) 20 19 18 17 NC 1 16 Portable media devices GPS-enabled handsets and portable FMI 2 15 DOUT devices Dedicated data receiver RFGND 3 14 LOUT GND Description PAD LPI 4 13 ROUT RST 5 12 GND The Si4704/05-D50 FM/RDS/RDBS receivers provide the highest performance 6 11 VA 7 8 9 10 and lowest power consumption available for portable devices today. The 100% CMOS IC integrates the complete FM and data receiver function from antenna to analog or digital audio and data out in a single 3 x 3 mm 20-pin QFN. Functional Block Diagram This product, its features, and/or its architecture is covered by one or FM Antenna Si4704/05 more of the following patents, as well as other patents, pending and ADC DAC FMI LOUT issued, both foreign and domestic: LNA PGA DSP RFGND 7,127,217 7,272,373 7,272,375 ADC DAC ROUT 7,321,324 7,355,476 7,426,376 AGC GPO LPI 7,471,940 7,339,503 7,339,504. 0/90 DCLK RDS 32.768 kHz (TYP) RSSI (Si4705) RCLK DOUT AFC CONTROL DFS VA 2.75.5 V INTERFACE XTAL REG OSC Rev. 1.0 12/10 Copyright 2010 by Silicon Laboratories Si4704/05-D50 SEN SCLK SDIO RST VD 1.623.6 V DIGITAL INTERFACE SEN NC SCLK SDIO GPO1 RCLK GPO2/INT VD GPO3/DCLK DFSSi4704/05-D50 2 Rev. 1.0