MAX4466 Electret Microphone Amplifier Module With Adjustable Gain (Analog Audio Sensor)

The MAX4466 Electret Microphone Amplifier Module is a compact analog microphone amplifier designed to capture and amplify audio signals from an electret microphone. It uses the MAX4466 low noise operational amplifier and provides adjustable gain through an onboard potentiometer.

The module produces an analog output voltage that varies according to the detected sound level, making it suitable for voice detection, sound monitoring, audio-reactive projects, and microcontroller based audio applications. Its low power consumption and compact design allow easy integration with Arduino, Raspberry Pi, ESP32, and other embedded platforms.

Key Features -

• Electret microphone input

• MAX4466 low noise amplifier

• Adjustable gain using onboard potentiometer

• Analog audio output

• High sensitivity for sound detection

• Low power consumption

• Compact PCB module design

• Suitable for microcontroller ADC inputs

Specifications -

• Amplifier IC = MAX4466

• Microphone Type = Electret microphone

• Operating Voltage = 2.4-5V DC

• Output Type = Analog voltage

• Gain Adjustment = 25x-125x typical

• Current Consumption = 1-2mA typical

• Frequency Response = 20Hz-20kHz

• Signal to Noise Ratio = Greater than 64dB typical

• Module Size = Approx. 20 x 15mm

• Operating Temperature = -20 to 70 C

Applications -

• Voice detection

• Sound level monitoring

• Audio recording projects

• Sound activated circuits

• Arduino and ESP32 audio projects

• IoT sound monitoring

• Audio reactive LED projects

• Embedded audio applications