MAX9814 Microphone Amplifier Module
Analog electret microphone amplifier module with MAX9814 automatic gain control. Outputs an analog audio signal with DC bias suitable for direct MCU ADC sampling.
Pinout
- VDD
Supply voltage. Common breakouts accept 2.7V to 5.5V.
Type · PowerVoltage · 3.3 - GND
Ground connection.
Type · Ground - OUT
Analog audio output to an MCU ADC input.
Type · Analog - GAIN
Optional gain selection input.
Type · GPIO - AR
Optional attack/release control input for AGC behavior.
Type · GPIO
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VDD | Power | Supply voltage. Common breakouts accept 2.7V to 5.5V. | 3.3 |
| GND | Ground | Ground connection. | |
| OUT | Analog | Analog audio output to an MCU ADC input. | |
| GAIN | GPIO | Optional gain selection input. | |
| AR | GPIO | Optional attack/release control input for AGC behavior. |
Pin details
5 connections- VDD
Supply voltage. Common breakouts accept 2.7V to 5.5V.
PowerVoltage · 3.3 - GND
Ground connection.
Ground - OUT
Analog audio output to an MCU ADC input.
Analog - GAIN
Optional gain selection input.
GPIO - AR
Optional attack/release control input for AGC behavior.
GPIO
Start wiring
I2S · Analog · 3.3 – 5 V · Breakout
Adafruit/Pimoroni list the electret microphone amplifier as a MAX4466-based board with 2.4–5 V DC supply, rail-to-rail analog output and …
Module pins: VDD, GND, OUT. Schematik maps them to your board in the app.
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