Overview

The LA2806M is a one-chip voice signal processing IC for single-mechanism answering machines that incorporates the basic functions required for an answering machine as well as the microcontroller interface and analog switches that are needed in order to control those basic functions.

Features

• One-chip voice signal processing for single-mechanism answering machines

• Because the LA2806M incorporates all of the basic functions required for an answering machine and can be controlled by a microcontroller, this IC makes it possible to design an original system

• Built-in power amplifier

• Allows conversation recording mode

• Recording bias and amplifier gain control current can be set separately using external resistors.

• Small package (MFP30S)

Functions

• Recording preamplifier (with ALC : LINE/MIC input)

• Playback equalizer amplifier

• Recording amplifier (DC bias)

• Analog switches

• Voice-operated switch (VOX) with filter

• Power amplifier (PO = 200 mW, RL = 8 Ω, VCC = 5 V)

• Line output buffer

• Microcontroller interface