Si4704/05-D60 BROADCAST FM RADIO RECEIVER WITH RDS/RBDS Features Worldwide FM band support FM digital tuning (64108 MHz) EN55020 compliant Excellent real-world performance No manual alignment necessary Integrated VCO Programmable reference clock Advanced FM seek tuning Adjustable soft mute control Automatic frequency control (AFC) RDS/RBDS processor (Si4705-D60) Automatic gain control (AGC) Digital audio out Digital FM stereo decoder 2-wire and 3-wire control interface Programmable de-emphasis Integrated LDO regulator Advanced Audio Processing QFN and SSOP packages Ordering Information: RoHS compliant See page 29. Applications Pin Assignments Table and portable radios Modules for consumer electronics Mini/micro systems Clock radios Si4704/05-D60 (QFN) CD/DVD and Blu-ray players Mini HiFi and docking stations Stereo boom boxes Entertainment systems Description 20 19 18 17 NC 1 16 FMI 2 15 DOUT The Si4704/05-D60 digital CMOS FM radio receiver IC integrates the complete RFGND 3 14 LOUT/ DFS GND PAD LPI 4 13 ROUT/ DOUT tuner function from antenna input to digital audio output, enabling a cost efficient RST 5 12 GND digital audio platform for consumer electronic applications with high TDMA noise 6 11 VA 7 8 9 10 immunity, superior radio performance, and high fidelity audio power amplification. Functional Block Diagram Si4704/05-D60 (SSOP) DOUT 1 24 LOUT/ DFS FM Antenna Si4704/05-D60 DFS 2 23 ROUT/ DOUT GPO3/ DCLK 3 22 DBYP DOUT RDS FMI (Si4705) DIGITAL GPO2/ INT 4 21 VA DFS LNA RFGND AUDIO GPO1 5 20 VD GPO/DCLK LOW-IF AGC NC 6 19 RCLK NC 7 18 SDIO 0/90 Mux ADC DAC ROUT FMI 8 17 SCLK DSP 32.768 kHz RFGND 9 16 SEN Mux ADC DAC LOUT RCLK AFC NC 10 15 RST 2.7~5.5 V (QFN) / 2.0~5.5 V (SSOP) VA LPI 11 14 GND CONTROL LDO VD NC 12 13 GND + INTERFACE GND 1.62 - 3.6 V This product, its features, and/or its architecture is covered by one or more of the following patents, as well as other patents, pending and issued, both foreign and domestic: 7,127,217 7,272,373 7,272,375 7,321,324 7,355,476 7,426,376 7,471,940 7,339,503 7,339,504. Rev. 1.2 8/13 Copyright 2013 by Silicon Laboratories Si4704/05-D60 SEN SCLK SDIO RST SEN NC SCLK SDIO GPO1 RCLK GPO2/ INT VD GPO3/ DCLK DFSSi4704/05-D60 2 Rev. 1.2