Si4731-D50

Si4730/31-D50 BROADCAST AM/FM RADIO RECEIVER Features  Worldwide FM band support (64–108 MHz)  Worldwide AM band support (520–1710 kHz)  Excellent real-world performance  Integrated VCO  Advanced AM/FM seek tuning  AM/FM digital tuning  Automatic frequency control (AFC)  Automatic gain control (AGC)  Digital FM stereo decoder  Programmable AVC max gain  Programmable de-emphasis  Seven selectable AM channel filters  Advanced audio processing  No manual alignment necessary  Programmable reference clock  Volume control  Adjustable soft mute control  RDS/RBDS processor (Si4731 only)  I2S digital audio out  2-wire and 3-wire control interface  Integrated LDO regulator  Wide range of ferrite loop sticks and air loop antennas supported  QFN package  RoHS compliant  Not suitable for wall-plugged consumer electronic applications* *Note: For consumer electronics applications, use Si4730/31-D60 for worldwide CE and EN compliance. Applications  Cellular handsets  MP3 players  Portable navigation Description  Mobile Internet Devices  Tablets  USB FM radio  eBooks The Si4730/31-D50 is the fourth generation digtial CMOS AM/FM radio receiver IC from Silicon Labs. The Si4730/31-D50 integrates the complete tuner function from antenna input to audio output. Functional Block Diagram AMI AM ANT RFGND FM ANT FMI 2.7– 5.5 V VA GND LNA AGC LNA AGC LDO Si473x RDS (Si4731) LOW-IF DIGITAL AUDIO DOUT DFS GPO/DCLK ADC DAC DSP ADC DAC ROUT LOUT AFC CON...