BA7781K Datasheet Stereo microphone amplifier for camcorders

Manufacturer: ROHM

BA7781K stereo microphone amplifier for camcorders by ROHM - Datasheet Preview

Datasheet Details

Part number	BA7781K
Manufacturer	ROHM
File Size	121.12 KB
Description	Stereo microphone amplifier for camcorders
Download	BA7781K Download (PDF)

Overview

Video ICs Stereo microphone amplifier for camcorders BA7781K The BA7781K allows construction of a stereo-microphone amplifier for camcorder use with a minimum number of external components.

The IC has a built-in wind-noise detection circuit, and wind-noise rejection filter.

The filter circuit is controlled automatically.

Key Features

1) Operates off a 3.0V to 5.25V power supply. 2) Automatic wind-noise rejection circuit. 3) Matrix circuit for stereo emphasis. 4) Automatic switching circuit for external microphones, built-in external monaural decision circuit, and input switch mode decision circuit.
Block diagram MTX OUT L PRE OUT L INV OUT L MTX IN L MODE 24 HPF IN L 18 WND 15dB DET NOR INV IN L 24 EXT IN L 25 EXT BG 26 INT IN L 27 GND REG GND 28 VREG 29 INT 23 22 21 20 19 17 16 DET OUT 15 DET IN 1.

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