Si4730-B20

Si4730/31-B20 BROADCAST AM/FM RADIO RECEIVER Features  Worldwide FM band support  EN55020 compliant (76–108 MHz)  No manual alignment necessary  Worldwide AM band support  Programmable reference clock (520–1710 kHz)  Volume control  Excellent real-world performance  Programmable soft mute control  Freq synthesizer with integrated VCO  RDS/RBDS processor (Si4731 only)  Advanced AM/FM seek tuning  Optional digital audio output (Si4731  Automatic frequency control (AFC) only)  Automatic gain control (AGC)  2-wire and 3-wire control interface  Integrated LDO regulator  2.7 to 5.5 V supply voltage  Digital FM stereo decoder  Firmware upgradeable  Programmable de-emphasis  Wide range of ferrite loop sticks and  Adaptive noise suppression air loop antennas supported  AM/FM digital tuning  3 x 3 x 0.55 mm 20-pin QFN package  Pb-free/RoHS compliant Applications  Table and portable radios  Stereos  Mini/micro systems  CD/DVD players  Portable media players  Boom boxes  Cellular handsets  Modules  Clock radios  Mini HiFi  Entertainment systems Description The Si4730/31 is the first digital CMOS AM/FM radio receiver IC that integrates the complete tuner function from antenna input to audio output. NCe-d3f1o-r34N-e3w5-DDe6si0gns GPO1 GPO2/INT GPO3/DCLK Ordering Information: See page 29. Pin Assignments Si4730/31-GM (Top View) DFS NC 1 FMI 2 RFGND 3 AMI 4 RST 5 6 20 19 18 17 16 15 DOUT GND PAD 14 LOUT 13 ROUT 12 ...