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Electronic Volume Controller IC

PT2253B

PT2253B v 1.7

Page 1

Revised October 1999

DESCRIPTION

PT2253B is an electronic volume controller IC utilizing CMOS Technology

specially designed for use on audio equipment. It has two (2) built-in channels

making it ideally suitable for mono and stereo sound applications. PT2253B

provides a wide frequency response range and a very low harmonic distortion to

mention a few; thereby guaranteeing a highly effective and reliable performance.

FEATURES

!

CMOS Technology

!

Low Power Consumption

!

Operating Voltage Range : Vcc = 4 ~ 12 V

(Backup Voltage is up to 4 V)

!

0dB to -68dB attenuation controlled by 2dB/step

!

2 Channels in each chip

!

Capable to control attenuation by a built-in oscillator and Up/Down Pin

!

Single Power Supply or Dual Power Supplies of (+) and (-) can be used

!

Wide Frequency Response Range

!

Very Low Harmonic Distortion

!

Available in 16 pins, DIP or SO Package

APPLICATIONS

! Audio Equipment Volume Control

! Traditional VR Replacement