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