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:
