PT2258 is a  6-Channel  Electronic Volume Controller IC utilizing CMOS Technology specially designed for the  new  generation  of  AV  Multi-Channel  Audio System. PT2258 provides an I2C Control Interface, an attenuation range of 0 to -79dB at 1dB/step, low noise, and high channel separation. Housed in 20 pins, DIP or  SOP,  PT2258’s  pin  assignments  and  application circuit  are  optimized  for  easy  PCB  Layout  and  cost saving advantages.