Tel : 886-2-29162151

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

4-Channel Audio Processor

PT2312

PT2312 v1.0

Page 1

Updated September 2001

Princeton Technology Corp.

Description

PT2312 is a four-channel digital control audio processor utilizing CMOS Technology. Volume, Bass,
Balance, Front/Rear Fader Processor, Selectable Input Gain are incorporated into a single chip having the
highest performance and reliability with the least external components. All functions are programmable
using the I

C Bus. PT2312 is housed in 32-pin, SOP Package. 4 stereo inputs with selectable input gain,

2-band tone control (treble & bass), balance, fader and loudness function are incorporated into a single
chip having the highest performance and reliability. Pin assignments and application circuits are
optimized for easy PCB layout and cost saving advantages.

Features

CMOS Technology

Least External Components

Treble and Bass Control

Loudness Function

4 Stereo Inputs with Selectable Input Gain

Input/Output for External Noise Reduction System/Equalizer

4 Independent Speaker Controls for Fader and Balance

Independent Mute Function

Volume Control in 1.25 dB/step

Low Distortion

Low Noise and DC Stepping

Controlled by I

C Bus Micro-Processor Interface

Available in 32 pins, SOP Package

Applications

Car Stereo (Audio)

Hi-Fi Audio System

LCD Monitor

Tel : 886-2-29162151

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

4-Channel Audio Processor

PT2312

PT2312 v1.0

Page 3

Updated September 2001

Princeton Technology Corp.

Application Circuit

Notes: 1. The Resistor ( R ) Range = 2.0K Ohms to 3.6 K Ohms.

2. Resistor ( R ) Recommended Value = 2.4 K Ohms

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ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: PT2312