HA1137W PDF Datasheet – FM IF System

An FM IF (Intermediate Frequency) System is a key component in FM (Frequency Modulation) radio receivers. It plays a crucial role in processing the incoming radio frequency signals to extract the audio information while rejecting unwanted noise and interference.

The Part Number is HA1137W.

The function of this semiconductor is FM IF System.

Package: DIP 16 Pin Type

Manufacturer: Hitachi

Preview images :HA1137W pdf


The Hitachi HA1137W is a monolithic integrated circuit developed for the FM IF system in a Hi-Fi stereo tuner set. It includes all those functions necessary for a FM IF housed in a 16-lead, dual-in-line plastic package. The block diagram shows that the input signal is fed to a three-stage FM IF amplifier/limiter configuration and to a three-stage detector for a tuning meter driver.


1. Exceptional Input Limiting Sensitivity

2. High AM Rejection Ratio

3. Low Harmonic Distorition

4. High Recovered AF Voltage

HA1137W datasheet hitachi

The FM IF system is designed to improve the signal quality, selectivity, and sensitivity of the radio receiver. By converting the RF signal to a lower intermediate frequency, the subsequent processing becomes more manageable, and the receiver can better reject unwanted signals and noise. This system is a critical part of the overall FM radio receiver architecture, ensuring that listeners receive clear and high-quality audio from the radio station of their choice.


1. IF Amplifier

2. Quadrature Detector

3. Low-noise AF Preamplifier

4. Tuning Meter Circuit

5. Delayed AGC circuit for tuner front end

HA1137W Datasheet

Related articles across the web

BK1080 Datasheet – FM Stereo Receiver – Beken

Part Number: BK1080

Function: FM Stereo Receiver IC

Package: 24pin 4x4mm QFN, SOP 16 Pin package

Manufacturer: Beken Corporation  ( http://www.bekencorp.com )


BK1080 fm stereo receiver

BK1080SB datasheet


The BK1080 FM stereo receiver employs a low-IF architecture, mixed signal image rejection and all digital demodulation technology. The station scan of BK1080 searches radio stations based on both the channel SNR estimation and demodulated signal quality assessment, increases the number of receivable stations while avoids false stops. BK1080 enables fm radio reception with low power, small board space and minimum number of external components. All functions are controlled through a simple 3-wire serial interface or I2C serial interface.



BK1080 pinout datasheet

BK1080SB pinout


1. Support 76~108 MHz band
2. Automatic gain control
3. Automatic frequency control
4. Seek tuning


1. Cellular handset
2. MP3 player
3. PDAs and notebook

BK1080 order information

1. BK1080QB QFN24
2. BK1080MB QFN24
3. BK1080XB QFN24
4. BK1080SB SOP16

Official Homepage: http://www.bekencorp.com/en


BK1080 Datasheet


Related articles across the web