Si4737-B20 Overview
Description
The Si4736/37/38/39 is the first digital CMOS AM/FM/WB radio receiver IC that integrates the complete tuner function from antenna input to audio output. 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 GND 7 8 9 10 11 VDD DFS Functional AMI AM ANT RFGND FM/ WB ANT FMI 2.7– 5.5 V VDD GND LNA AGC LNA AGC LDO Si473x RDS (Si4737/ 39) LOW-IF DIGITAL AUDIO (Si4737/ 39) DOUT DFS GPO/DCLK ADC DAC DSP ADC DAC ROUT LOUT AFC CONTROL INTERFACE VIO 1.5–3.6 V Patents pending Notes: 1.
Key Features
- NOAA weather band support (162.4
- No manual alignment necessary 162.55 MHz)
- Programmable reference clock
- Worldwide FM band support
- Volume control (76–108 MHz)
- Programmable soft mute control
- Worldwide AM band support
- RDS/RBDS processor (Si4737/39
- 1050 Hz alert tone detection only)
- Excellent real-world performance
