DESCRIPTION
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. 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, 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: 4 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