MAX9814 AGC Microphone Amplifier Module – CMA-4544PF-W

Take your audio projects to the next level with the MAX9814 Microphone AGC Amplifier Module (CMA-4544PF-W). Built around the Maxim MAX9814 chip, this compact module features Automatic Gain Control (AGC) that dynamically adjusts amplification levels — keeping audio output consistent and clear whether you're in a quiet room or a noisy environment. It's an ideal building block for DIY electronics, voice-activated systems, Arduino/Raspberry Pi projects, and more.

Key Features

Automatic Gain Control (AGC): Automatically adjusts microphone gain to maintain steady, balanced audio output across varying sound levels.
Low Noise Amplifier: Delivers clean, high-fidelity audio capture with minimal background interference.
Built-in CMA-4544PF-W Electret Microphone: High-sensitivity microphone element for accurate sound pickup.
Wide Supply Voltage Range: Compatible with 2.7V–5.5V, making it easy to integrate with common microcontrollers like Arduino, ESP32, and Raspberry Pi.
Adjustable Attack & Release Time: Fine-tune the AGC response for your specific application with onboard configuration options.
Compact PCB Design: Small form factor fits neatly into enclosures, breadboards, and custom PCB setups.
3-Pin Output: Simple VCC, GND, and signal output connections for fast, hassle-free wiring.

Specifications

IC Chip: Maxim MAX9814
Microphone Element: CMA-4544PF-W Electret Condenser
Supply Voltage: 2.7V – 5.5V
Output: Analog audio signal
AGC: Yes (with adjustable attack/release)
Gain Settings: 40dB / 50dB / 60dB selectable

Perfect For

Arduino, ESP32, and Raspberry Pi audio input projects
Voice recognition and voice command systems
Sound-activated lighting or trigger circuits
DIY intercom, recorder, and amplifier builds
Robotics and embedded system audio interfacing

Frequently Asked Questions

Q: What does the MAX9814 AGC Microphone Amplifier Module do?

A: The MAX9814 module amplifies the audio signal from its built-in CMA-4544PF-W electret condenser microphone while using Automatic Gain Control (AGC) to dynamically balance the output level — delivering consistent, clear audio regardless of changes in the surrounding sound environment. It outputs an analog signal ready for use with any ADC-equipped microcontroller.

Q: Is the MAX9814 module compatible with Arduino and ESP32?

A: Yes! The module operates between 2.7V and 5.5V, making it directly compatible with Arduino (5V), ESP32 (3.3V), Raspberry Pi, and most other popular development boards. Simply connect VCC, GND, and the analog output pin to your microcontroller's ADC input and you're ready to capture audio.

Q: Can I adjust the gain on the MAX9814 module?

A: Yes. The MAX9814 supports three selectable gain levels — 40dB, 50dB, and 60dB — controlled via the GAIN pin on the board. This lets you optimize the module's sensitivity for your specific application, from close-range voice capture to picking up more distant sounds.

Q: What is the CMA-4544PF-W microphone on this module?

A: The CMA-4544PF-W is a high-sensitivity electret condenser microphone element integrated directly onto the MAX9814 module. It provides accurate, wide-frequency sound pickup and works in tandem with the MAX9814 AGC amplifier chip to deliver reliable audio input for your projects.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.