MAX9812L Microphone Amplifier Module — Fixed 20dB Gain

MAX9812L Microphone Amplifier Module — Fixed 20dB Gain

The MAX9812L microphone amplifier module features an electret microphone and a MAX9812L fixed-gain amplifier with 20dB (10×) gain. Unlike adjustable-gain modules, the fixed gain provides consistent, predictable output — ideal for applications requiring stable audio levels. Outputs an analog signal directly compatible with Arduino ADC inputs.

Key Features

• ✅ Fixed 20dB (10×) gain — consistent, predictable audio output level
• ✅ Electret microphone included — no external mic needed
• ✅ Analog output — direct connection to Arduino ADC
• ✅ Low noise — MAX9812L for clean audio signal
• ✅ 2.7–5.5V supply — compatible with 3.3V and 5V Arduino boards
• ✅ RoHS compliant

Key Specifications

• IC: MAX9812L | Gain: 20dB (10×) fixed
• Supply: 2.7–5.5V | Output: Analog

Typical Applications

• Arduino sound level detection and monitoring
• Voice-activated trigger and clap detection
• Audio input for speech recognition projects
• Consistent microphone input for data logging

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