MAX4466 Electret Microphone Amplifier Module

MAX4466 Electret Microphone Amplifier with Adjustable Gain

Engineered for high-fidelity audio sampling, voice recognition, and sound FFT analysis, this module pairs a 20Hz-20kHz electret capsule with Maxim's MAX4466 operational amplifier. It boasts exceptional power supply noise rejection and a trim pot for 25x-125x gain adjustment.

Specifications

• Op-Amp IC: Maxim MAX4466 with optimized microphone pre-amplification
• Adjustable Gain: 25x to 125x (set via rear-mounted trimmer)
• Frequency Response: 20 Hz to 20 kHz
• Power Supply Rejection Ratio (PSRR): 112 dB (clean audio on digital rails)
• Operating Voltage: 2.4V to 5.5V DC
• Output: Rail-to-rail analog waveform centered at VCC/2