Product details
The MAX9814 High Performance Microphone Module is a compact, high-sensitivity audio sensor based on the MAX9814 microphone amplifier IC with an onboard electret microphone. It features Automatic Gain Control (AGC), which automatically adjusts the microphone gain according to the surrounding sound level, ensuring clear and consistent audio output. The module delivers low-noise analog audio signals, making it ideal for voice recognition, sound detection, audio recording, smart home devices, IoT projects, and Arduino or ESP32-based applications. Its wide operating voltage and adjustable gain settings make it suitable for both hobby and professional embedded audio projects.
Specifications
- IC: MAX9814 Microphone Amplifier
- Microphone Type: Electret Condenser Microphone
- Operating Voltage: 2.7V – 5.5V DC
- Current Consumption: Approximately 3mA
- Output Type: Analog Audio Output
- Output Signal: Up to 2Vpp with 1.25V DC Bias
- Frequency Response: 20Hz – 20kHz
- Automatic Gain Control (AGC): Yes
- Selectable Gain: 40dB, 50dB, or 60dB
- Attack/Release Ratio: Configurable via AR pin
- Low Input Noise Density: 30 nV/√Hz (Typical)
- Total Harmonic Distortion (THD): 0.04% (Typical)
- Microphone Bias Voltage: 2V Low-Noise Internal Bias
- Operating Temperature: -40°C to +85°C
- Interface: Analog Output
- Mounting Holes: 2
- Board Dimensions: Approximately 25.4 × 14.1 mm
- Compatible With: Arduino, ESP32, ESP8266, Raspberry Pi (ADC required), STM32, AVR, PIC and other microcontrollers.
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