Skip to Content
  1. All Products
  2. All Products
  3. MAX9814 Microphone Amplifier Module with Auto Gain Control
Pricelist: - Pricelist

MAX9814 Microphone Amplifier Module with Auto Gain Control

🎙️ MAX9814 Electret Microphone Amplifier – Auto Gain Control

Capture clear audio across varying environments with this simple yet powerful MAX9814-based microphone amplifier. Featuring built-in AGC, it's ideal for voice-activated devices, sound detection, and audio-sensitive DIY projects.

📊 Specifications & Features

ParameterValue & Details
ChipsetMAX9814: low-noise preamp + VGA + AGC circuitry 
Supply Voltage2.7–5.5 V (3 V typical, 5 V supported)
Supply Current≈ 3 mA
Gain Settings40 dB, 50 dB, or 60 dB (via Gain pin jumper)
AGC Attack/Release RatioAdjustable: 1:500, 1:2000, or 1:4000 (via AR jumper)
Frequency Response20 Hz–20 kHz
Output Level~2 V peak-to-peak on 1.25 V DC bias
Noise & DistortionInput noise ~30 nV/√Hz; THD ≈0.04%
AGC Hold Time~30 ms
Operating Temp−40 °C to +85 °C
PackageBreakout board with electret mic and 5-pin header

🔧 Wiring Guide (Arduino Compatible)

  1. VCC → 3.3 V or 5 V

  2. GND → Ground

  3. OUT → Arduino analog input (e.g., A0)

  4. GAIN → Set maximum gain:

    • GND → 40 dB

    • Float → 60 dB

    • VCC → 50 dB 

  5. AR → Set Attack/Release:

    • Float → 1:4000 (default)

    • GND → 1:500

    • VCC → 1:2000 

📋 Sample Arduino Code

cpp
CopyEdit
const int micPin = A0;

void setup() {
  Serial.begin(9600);
  Serial.println("MAX9814 Mic Ready");
}

void loop() {
  int val = analogRead(micPin);
  Serial.println(val);
  delay(10);
}


🎥 YouTube Video Tutorials

Copy these for easy integration!

📄 Datasheet & Support

210.00 LE 210.00 LE

This combination does not exist.

Sensor