Specifications:
* MAX9814 is a high-performance, low-cost, low-noise front-end amplifier with automatic gain control (AGC) and microphone noise bias. The device features a low-noise front-end amplifier, a variable gain amplifier (VGA), a microphone amplifier output, a voltage generator bias, and an AGC control circuit.
Features:
* Automatic Gain Control (AGC)
* 3 Gain settings (40dB, 50dB, 60dB)
* Programmable Action Time
* Programmable Action and Release Time Ratio
* Operating voltage 2.7V ~ 5.5V
* Low THD: 0.04% (typical)
* Low-Power Off Mode
* Built-in 2V Microphone Noise Bias
