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PT2257-D Datasheet(PDF) 1 Page - Princeton Technology Corp

Part # PT2257-D
Description  Electronic Volume Controller IC
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Manufacturer  PTC [Princeton Technology Corp]
Direct Link  http://www.princeton.com.tw
Logo PTC - Princeton Technology Corp

PT2257-D Datasheet(HTML) 1 Page - Princeton Technology Corp

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Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2257 V1.4
- 1 -
May, 2008
Electronic Volume Controller IC
PT2257
DESCRIPTION
The 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 suitable
for mono and stereo sound applications. The PT2257 provides an I2C control interface, an attenuation
range of 0 to -79dB, low noise, and high channel separation. It is housed in an 8 pins, DIP or SOP
package. The PT2257’s pin assignments and application circuit are optimized for easy PCB layout and
cost saving advantages.
FEATURES
• CMOS technology
• Low power consumption
• Least external components
• Attenuation range: 0 to -79dB at 1dB/step
• Operating voltage: 3 to 9V
• Low Noise, S/N Ratio>100dB (A-weighting)
• Two channel output
• Available in 8 pins, DIP or SOP
APPLICATIONS
• AV surround audio equipment
• Car audio
• Mini compo
• Computer multi-media speaker
• Other audio equipment


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