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PT2256V V1.2

- 1 -

August, 2006

Electronic Volume Controller IC

PT2256V

DESCRIPTION

PT2256V 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

applications. PT2256V 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 SOP and is functionally compatible with TC9235P. Pin assignments and

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

FEATURES

• CMOS Technology

• Low Power Consumption

• Wide Operation Voltage Range: VDD=4.5 ~ 11V

• Least External Components

• 2 Channels in the same chip

• 0dB to -78dB 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 SOP

APPLICATION

• Audio Equipment Volume Control