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Si4735-B20 Datasheet Broadcast Am/fm/sw/lw Radio Receiver

Manufacturer: Silicon Laboratories

Overview: Si4734/35-B20 BROADCAST AM/FM/SW/LW RADIO RECEIVER.

General Description

The Si4734/35 is the first digital CMOS AM/FM/SW/LW radio receiver IC that integrates the complete tuner function from antenna input to audio output.

Ordering Information: See page 31.

Pin Assignments Si4734/35-GM (Top View) NC GPO1 GPO2/INT GPO3/DCLK 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 GND 7 8 9 10 11 VDD SEN SCLK SDIO RCLK VIO Functional Block Diagram FM / SW ANT FMI AM / LW ANT AMI RFGND 2.7 - 5.5 V VDD GND LNA AGC LNA AGC LDO Si4734/35 RDS (Si4735) LOW-IF DIGITAL AUDIO (Si4735) DOUT DFS GPO/DCLK ADC DAC DSP ADC DAC ROUT LOUT AFC CONTROL INTERFACE VIO 1.5-3.6V Patents pending Notes: 1.

Key Features

  • Worldwide FM band support.
  • No manual alignment necessary (64.
  • 108 MHz).
  • Adjustable channel filters.
  • Worldwide AM band support.
  • EN55020 complaint (520.
  • 1710 kHz).
  • Programmable reference clock.
  • SW band support (2.3.
  • 21.85 MHz).
  • Digital volume control.
  • LW band support (153.
  • 279 KHz).
  • Adjustable soft mute control.
  • Excellent real-world performance.
  • RDS/.

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