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Si4738-B20 Datasheet Broadcast Weather Band Radio Receiver

Manufacturer: Silicon Laboratories

Overview: Si4736/37/38/39-B20 BROADCAST WEATHER BAND RADIO RECEIVER NC3d6e/d3f7o/r38N/e3w9-DCe4s0igns GPO1 GPO2/INT.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The Si4736/37/38/39 is the first digital CMOS AM/FM/WB radio receiver IC that integrates the plete 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 Block Diagram 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.

To ensure proper operation and receiver performance, follow the guidelines in “AN383: Universal Antenna Selection and Layout

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.
  • Programmable de-emphasis (520.
  • 1710 kHz) (Si4736/37 only).
  • RDS/RBDS processor (Si4737/39.
  • 1050 Hz alert tone detection only).
  • Excellent real-world performance.
  • Optional digital a.

More Datasheets from Silicon Laboratories

Part Number Description
Si4738-C40 BROADCAST AM/FM RADIO RECEIVER
Si4730-B20 BROADCAST MULTI-BAND RADIO RECEIVER
Si4730-B20 BROADCAST AM/FM RADIO RECEIVER
Si4730-D50 BROADCAST AM/FM RADIO RECEIVER
Si4730-D60 BROADCAST AM/FM/SW/LW RADIO RECEIVER
Si4731-B20 BROADCAST MULTI-BAND RADIO RECEIVER
Si4731-B20 BROADCAST AM/FM RADIO RECEIVER
Si4731-D50 BROADCAST AM/FM RADIO RECEIVER
Si4731-D60 BROADCAST AM/FM/SW/LW RADIO RECEIVER
Si4734-B20 BROADCAST AM/FM/SW/LW RADIO RECEIVER

Si4738-B20 Distributor