Electret Microphone Amplifier - MAX9814 with Auto Gain Control

This well designed electret microphone amplifier module is a step above the rest, with built-in automatic gain control. What does this mean? The AGC in the amplifier means that near 'loud' sounds will be quieted so they don't overwhelm & 'clip' the amplifier. Also low level, quiet, far-away sounds will be amplified. This sound detected by electret microphones module is amplified using the Maxim MAX9814, a chip that is designed for amplifying electret microphones in situations where the loudness of the audio is variable. The module is great for when you want to record or detect audio in a setting where levels change and you don't want to have to tweak the amplifier gain all the time. You may use it in many communication and sound applications such as reactive sound projects. Features • supply voltage range:2.7V - 5.5V • Frequency Response: 20Hz – 20 KHz • Automatic gain, selectable max from 40dB, 50dB or 60dB • Dimensions: 26mm x 14mm Interfacing MAX9814 Electret Microphone Amplifier Module with Arduino. MAX9814 Electret Microphone Amplifier Module sound meter project. MAX9814 Electret Microphone Amplifier Module Adafruit Arduino tutorial.

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* Applications: Speech Recognition Bluetooth Headsets Two-Way Communicators High-Quality Portable Recorders IP Phones/Telephone Conferencing Schematic Diagram: Documents MAX9814 Datasheet