Overview

The LA3235W is a single-chip record system IC for use in 1.5 V headphone stereo products. While previous recording systems were implemented using a dedicated tape drive, by using the LA3235W, such a system can be implemented by adding electronic switching to a playback-only tape drive. Additionally, a compact record/playback system can be implemented with just two chips by combining this IC and the LA4590W 1.5 V preamplifier/power amplifier IC

Features

• Miniature package (48-pin SQFP)

• Built-in microphone and record bias power supplies

• Built-in radio amplifier with ALC circuit

• Systems can be easily controlled from a microprocessor using the built-in electronic switching, power supply, and amplifier block control circuits.

Functions

• Microphone amplifier (with ALC) ×2

• Microphone monitor amplifier ×2

• Radio amplifier (with ALC) × 2

• Record bias power supply

• Record amplifier ×4 (with forward/reverse switching and muting functions)

• Microphone power supply

• All control circuits, including electronic switching circuits, built in