BROADCAST MULTI-BAND RADIO RECEIVER - Silicon Laboratories - #1

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Rev. 0.5 10/08 Copyright © 2008 by Silicon Laboratories Si473x-B20 Si473x-B20 BROADCAST MULTI-BAND RADIO RECEIVER Features Applications Si473x Product Selector Guide ƒÞ FM band support: 76–108 MHz ƒÞ AM band support: 520–1710 kHz ƒÞ SW band support: 2.3–21.85 MHz (Si4734/35) ƒÞ LW band support: 153–279 kHz (Si4734/35) ƒÞ Weather band support: 162.4– 162.55 MHz (Si4736/37/38/39) ƒÞ 1050 Hz alert tone detection (Si4736/37/38/39) ƒÞ Excellent real-world performance ƒÞ Freq synthesizer with integrated VCO ƒÞ Advanced seek tuning ƒÞ Automatic frequency control (AFC) ƒÞ Automatic gain control (AGC) ƒÞ Integrated LDO regulator ƒÞ Digital FM stereo decoder ƒÞ Programmable de-emphasis ƒÞ Adaptive noise suppression ƒÞ AM/FM digital tuning ƒÞ EN55020 compliant ƒÞ No manual alignment necessary ƒÞ Programmable reference clock ƒÞ Volume control ƒÞ Programmable soft mute control ƒÞ RDS/RBDS processor (Si4731/35/37/39) ƒÞ Optional digital audio output (Si4731/35/37/39) ƒÞ 2-wire control interface ƒÞ 2.7 to 5.5 V supply voltage ƒÞ Firmware upgradeable ƒÞ Wide range of ferrite loop sticks and air loop antennas supported ƒÞ 3 x 3 x 0.55 mm 20-pin QFN package ƒÜ Pb-free/RoHS compliant ƒÞ Table and portable radios ƒÞ Audio video receivers ƒÞ Stereos ƒÞ Mini/micro systems ƒÞ CD/DVD players ƒÞ Portable media players ƒÞ Cellular handsets ƒÞ Emergency radios ƒÞ Clock radios ƒÞ Modules ƒÞ Mini HiFi ƒÞ Boom boxes Part FM AM RDS SW/LW WB Si4730 76 – 108 MHz „Ï Si4731 76 – 108 MHz „Ï „Ï Si4734 64 – 108 MHz „Ï „Ï Si4735 64 – 108 MHz „Ï „Ï „Ï Si4736 76 – 108 MHz „Ï „Ï Si4737 76 – 108 MHz „Ï „Ï „Ï Si4738 76 – 108 MHz „Ï Si4739 76 – 108 MHz „Ï „Ï Patents Pending Notes: 1. Place Si473x as close as possible to antenna jack and keep the FMI and AMI traces as short as possible. 2. Contact your local sales representatives for more information or to obtain application notes. Ordering Information: See page 18. Pin Assignments GND PAD 1 2 3 20 19 18 17 11 12 13 14 6 7 8 9 4 5 16 10 15 GPO2/INT VIO DOUT LOUT ROUT RST GND NC AMI RCLK SDIO VDD FMI RFGND GPO3/DCLK NC GPO1 DFS SCLK SEN Si473x-GM (Top View)