MAX9814 Electret Microphone AGC Amplifier Module Auto Gain Control Release Ratio Low THD for Arduino

Automatic Gain Control (AGC)
Three Gain Settings (40dB, 50dB, 60dB)
Frequency Response: 20Hz – 20KHz
Programmable Attack Time
Programmable Attack and Release Ratio
Supply Voltage: 2.7v-5.5v @ 3mA current
Low THD: 0.04% (typ)
Low-Power Shutdown Mode
Internal Low-Noise Microphone Bias, 2V

Application:
Bluetooth Headsets, Digital Still Cameras, Digital Video Cameras, Entertainment Systems (e.g. Karaoke)
High-Quality Portable Recorders. IP Phones/Telephone Conferencing, PDAs, Two-Way Communicators