Si4730/31/34/35-D60 BROADCAST AM/FM/SW/LW RADIO RECEIVER Features Worldwide FM band support Seven selectable AM channel filters (64108 MHz) AM/FM/SW/LW digital tuning Worldwide AM band support EN55020 compliant (5201710 kHz) No manual alignment necessary SW band support (Si4734/35) Programmable reference clock (2.326.1 MHz) Adjustable soft mute control LW band support (Si4734/35) RDS/RBDS processor (Si4731/35) (153279 kHz) Digital audio out Excellent real-world performance 2-wire and 3-wire control interface Integrated VCO Integrated LDO regulator Advanced AM/FM seek tuning Ordering Information: Wide range of ferrite loop sticks and Automatic frequency control (AFC) See page 31. air loop antennas supported Automatic gain control (AGC) QFN and SSOP packages Digital FM stereo decoder RoHS compliant Pin Assignments Programmable de-emphasis Advanced Audio Processing Si473x-D60 (QFN) Applications 20 19 18 17 Table and portable radios Modules for consumer electronics NC 1 16 FMI 2 15 DOUT Mini/micro systems Clock radios RFGND 3 14 LOUT/ DFS GND CD/DVD and Blu-ray players Mini HiFi and docking stations PAD AMI 4 13 ROUT/ DOUT Stereo boom boxes Entertainment systems RST 5 12 GND 6 11 VA 7 8 9 10 Description The Si473x-D60 digital CMOS AM/FM radio receiver IC integrates the complete Si473x-D60(SSOP) broadcast tuner and receiver function from antenna input to digital audio output. DOUT 1 24 LOUT/ DFS The device leverages the Silicon Labs broadcast proven digital low-IF DFS 2 23 ROUT/ DOUT architecture, enabling a cost-effective, digital audio platform for consumer electronic applications with high TDMA noise immunity, superior radio GPO3/ DCLK 3 22 DBYP performance, and high fidelity audio power amplification. GPO2/ INT 4 21 VA GPO1 5 20 VD Functional Block Diagram NC 6 19 RCLK NC 7 18 SDIO FM / SW FMI 8 17 SCLK ANT Si473x-D60 RFGND 9 16 SEN RDS DOUT NC 10 15 RST FMI (Si4731/ DIGITAL 35) DFS LNA NC 11 14 GND AUDIO GPO/DCLK AMI 12 13 GND LOW-IF AGC Mux AM / LW AMI ADC DAC ROUT ANT LNA DSP This product, its features, and/or its RFGND Mux ADC DAC LOUT architecture is covered by one or more of AGC 2.7~5.5 V (QFN) the following patents, as well as other 2.0~5.5 V (SSOP) VA CONTROL patents, pending and issued, both LDO AFC VD + INTERFACE GND 1.62 - 3.6 V 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 Si473x-D60 RCLK SEN SCLK SDIO RST SEN NC SCLK SDIO GPO1 RCLK GPO2/ INT VD GPO3/ DCLK DFSSi4730/31/34/35-D60 2 Rev. 1.2