Overview

The LA7471M is a stereo microphone amplifier for use in video camera products. It includes an automatic wind noise detection and removal circuit, an equalization circuit to compensate for microphone frequency characteristics and an L/R mixing circuit to provide a good stereo image. The LA7471M provides high quality audio for video camera applications.

Features

• Automatic wind noise detection and exclusion circuit (The high-pass filter provides a first-order to third-order linear conversion.)

• High-quality audio (low noise, microphone frequency characteristic compensation, and stereo enhancement)

Functions

• Microphone amplifier (two channels)

• Internal/external microphone switching

• Automatic wind noise detection/prevention circuit

• High-pass filter and disable switch

• Internal microphone power supply

• External microphone power supply (with current limiter)

• Ripple filter

• Stereo/mono detection for external microphones