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-pin, DIP or SOP package. The PT2257’s pin assignments and application circuit are optimized for easy PCB layout and cost saving advantages.
● 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
● Package Type - DIP 8
- SOP 8
● AV surround audio equipment
● Car audio
● Mini compo
● Computer multi-media speaker
● Other audio equipment
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