MAX9814 Auto Gain Control Stable Microphone Amplifier

The MAX9814 Microphone Amplifier with Auto Gain Control (AGC) is a compact, high-performance module designed to deliver crystal-clear audio with low distortion. It is widely used in DIY electronics, sound detection systems, and voice recording devices. With its low noise design, wide frequency response, and programmable gain options, this amplifier ensures reliable performance for both hobbyists and professionals.

Key Features

• Supply Voltage: 2.7V – 5.5V @ 3mA current
• Output: 2Vpp on 1.25V bias
• Frequency Response: 20Hz – 20KHz (covers full audio range)
• Programmable Attack & Release: Adjustable ratio for precise sound control
• Automatic Gain Control: Selectable max gain of 40dB, 50dB, or 60dB
• Low Input-Referred Noise: Density of only 30nV for clean audio
• Low Distortion: THD as low as 0.04% (typical)

Applications

• DIY audio and sound detection projects
• Voice recording and speech recognition devices
• Portable electronics and embedded systems
• Microphone pre-amplification for hobby and professional use

Why Choose the MAX9814 Amplifier?

This module combines low noise, wide dynamic range, and automatic gain control to provide consistent sound quality. Whether you are building a DIY project, developing an audio recorder, or experimenting with sound detection, the MAX9814 offers excellent performance at low power consumption.