Electronic Volume Controller IC

PT2256

Princeton Technology Corp.

Tel : 886-2-29162151

Fax: 886-2-29174598

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

PT2256 v1.3

1

Updated Sept. 2000

DESCRIPTION

PT2256 is an electronic volume controller IC utilizing CMOS Technology specially designed for use on

audio equipment. It has 2 built-in channels making it ideally suitable for mono and stereo sound appli-

cations. PT2256 provides the Loudness Function, a wide frequency response range and a very low total

harmonic distortion, thereby guaranteeing a highly effective and reliable performance. It is housed in

16-pin DIP or SO package and is functionally compatible with TC9235P. Pin assignments and applica-

tion circuit are optimized for low cost advantages and easy PCB Layout.

FEATURES

• CMOS Technology

• Low Power Consumption

• Least External Components

• 2 Channels in the same chip

• 0 dB to -78 dB Attenuation can be controlled by UP and Down Pin.

• 20dB Tap for Loudness Circuit

• Built-in DC Output Circuit (8 levels) for Volume Level Metering

• Wide Frequency Response Range

• Low Total Harmonic Distortion

• Available in 16 pins DIP or SO Package

APPLICATION

• Audio Equipment Volume Control