PGA4311UA is a 4-channel audio volume controller
PGA4311 is a high-performance 4-channel audio volume controller designed for high-end consumer audio systems. The PGA411 operates with a high-performance internal cascade amplifier with low noise and distortion while providing the ability to drive a 600Ω load directly without buffering. The 3-wire serial control interface allows for the linking of a host controller with a wide range of variations, in addition to support daisy-chaining multiple PGA4311 devices.
basic characteristics of the circuit;
1 digitally controlled analogue volume control ie
A 4 independent audio channels,
2. Serial control interface,
3. Zero detection,
4. Mute function;
2. The wide gain and attenuation range is -95.5-31.5dB with 0.5dB steps
3. Low noise range of 120dB.
4. Noise-free level transmission;
5. Crosstalk between low channels is 0130dBFS;
6. Power supply voltage, analog voltage is plus or minus 5V, digital voltage is 5V