Si4712-B30-GM Silicon Labs

Si4710/11-B30 Si4710/11-B30 FM RADIO TRANSMITTER Features Integrated receive power RDS/RBDS encoder (Si4711 only) measurement PCB loop and stub antenna Worldwide FM band support support with self-calibrated (76108 MHz) capacitor tuning Requires only two external Programmable transmit level components Audio dynamic range control Frequency synthesizer with Advanced modulation control integrated VCO 2.7 to 5.5 V supply voltage Digital stereo modulator Integrated LDO regulator Ordering Information: Programmable pre-emphasis 3 x 3 x 0.55 mm 20-pin QFN Analog/digital audio interface See page 32. Pb-free and RoHS Compliant Audio silence detector Designed for compatibility with Programmable reference clock cellular operation Pin Assignments Applications Si4710/11 Cellular handsets/hands-free Wireless speakers/microphone (Top View) MP3 players Satellite digital audio radios Portable media players Personal computers/notebooks Description 20 19 18 17 NC 1 16 The Si4710/11 integrates the complete transmit functions for standards- compliant unlicensed FM broadcast stereo transmission. Users must NC 2 15 RIN comply with local regulations on radio frequency (RF) transmission. RFGND 3 14 DFS GND PAD TXO 4 13 DIN Functional Block Diagram RST 5 12 GND DFS DIGITAL 6 11 VDD Si4710/11 7 8 9 10 AUDIO DIN LIN ADC DAC Tx TXO Ant DSP Patents pending L1 120 nH RIN ADC DAC RFGND Note: To ensure proper operation and performance, follow the guide- 2.75.5 V VDD lines in AN383: Universal GPO CONTROL LDO AFC Antenna Selection and Layout C1 GND RDS Si( 4711 ) INTERFACE 22 nF Guidelines. Silicon Laboratories will evaluate schematics and lay- outs for qualified customers. Rev. 1.1 2/08 Copyright 2008 by Silicon Laboratories Si4710/11 GPO1 GPIO2/INT GPIO3/DCLK SEN SCLK SDIO RST VIO RCLK SEN NC SCLK GPO1 SDIO RCLK GPO2/INT GPO3/DCLK VIO LINSi4710/11-B30 2 Rev. 1.1