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
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.