Princeton Technology Corp.
Electronic Volume Controller IC
DESCRIPTION
Tel : 886-2-29162151
Fax: 886-2-29174598
URL:
http://www.princeton.com.tw
PT2257
PT2257 is an Electronic Volume Controller IC utilizing CMOS Technology specially designed for the
new generation of AV Entertainment Products. It has two (2) built-in channels making it ideally suit-
able for mono and stereo sound applications. PT2257 provides an I
2
C Control Interface, an attenuation
range of 0 to -79 dB, low noise, high channel separation. Housed in 8-pin, DIP or SO Package,
PT2257鈥檚 pin assignments and application circuit are optimized for easy PCB Layout and cost saving
advantages.
FEATURES
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CMOS Technology
Low Power Consumption
Least External Components
Attenuation Range: 0 to -79 dB at 1dB/step
Operating Voltage: 5 to 9 V
Low Noise, S/N Ratio>100dB (A-weighting)
Two Channel Output
Available in 8-pin, DIP or SO Package
APPLICATIONS
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AV Surround Audio Equipment
Car Audio
Mini Compo
Computer Multi-Media Speaker
Other Audio Equipments
PT2257 v 1.0
Page 1
Updated April 2000
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