1.Automatic gain control (AGC)

2.3 gain settings (40dB, 50dB, 60dB)

3.Programmable action time

4.Programmable action and release time ratio

5.Power supply voltage range 2.7V～5.5V

6.Low THD: 0.04% (typical value)

7.Low power shutdown mode

8.Built-in 2V low noise microphone bias