MAX9814 Microphone Amplifier Module with Auto Gain Control

Features:
The MAX9814 Microphone Amplifier Module with Auto Gain Control (AGC) is a compact audio amplification module that enhances microphone signals while automatically adjusting the gain to maintain consistent output levels.
This module is ideal for sound detection, voice recognition, and audio recording applications, offering easy integration and adjustable gain control.
It features low-noise operation and can be powered by 3.3V or 5V, making it compatible with platforms like Arduino and Raspberry Pi.
The built-in AGC ensures that audio signals, even with varying volumes, remain clear and balanced.
Specifications:
3 kinds of gain settings (40dB, 50dB, 60dB)
Supply Voltage: 2.7v – 5.5v @ 3mA current
Output: 2Vpp on 1.25V bias
Frequency Response: 20Hz – 20 KHz
Low Input-Referred Noise Density of 30nV
Low THD: 0.04% (typical)
Automatic Gain Control (AGC)
programmable action time
programmable action and release time ratio
Low-power shutdown mode
Built-in 2 Volt low noise microphone bias
Size: 26 x 14 x 11mm
MAX9814 Microphone Module Pinout
This module has 5 pins:

VCC: Module power supply – 2.7-5.5 V
GND: Ground
OUT: Analog data output to the microcontroller
Gain: Adjusting maximum module output*
AR: Adjusting module accuracy*