ADMP401 MEMS Analog Microphone Module – High Sensitivity

ADMP401 MEMS Omnidirectional Microphone Module

Product Description

The ADMP401 MEMS Omnidirectional Microphone Module is a compact audio sensing solution designed for voice recognition, audio recording, IoT devices, wearables, robotics, and embedded systems. Based on MEMS technology, it provides reliable and clear sound detection in a small form factor.

The microphone features an omnidirectional pickup pattern, allowing it to capture sound from all directions, along with a typical 62 dB signal-to-noise ratio for clean audio sensing. Its analog output can be connected directly to compatible microcontroller ADC inputs.

High Fidelity Sound Capture

The ADMP401 provides a 62 dB typical SNR and a frequency response of approximately 100 Hz–15 kHz, making it suitable for voice and general audio sensing applications. Its omnidirectional design allows sound to be captured from different directions without requiring precise microphone positioning.

Low Power & Easy Interface

The module operates from 1.5V–3.3V DC and consumes less than 250 µA, making it suitable for low-power and battery-operated applications. The analog output provides a simple interface for microcontrollers such as Arduino, ESP32, and Teensy.

Key Features

• MEMS microphone technology
• Omnidirectional sound pickup
• Typical 62 dB signal-to-noise ratio
• Analog audio output
• Low current consumption below 250 µA
• 1.5V–3.3V operating voltage
• Compact design
• Suitable for Arduino, ESP32, and Teensy
• Ideal for voice and sound sensing applications

Technical Specifications

Feature	Specification
Model	ADMP401 MEMS
Output Type	Analog
Supply Voltage	1.5V – 3.3V DC
Current Consumption	<250 µA
Signal-to-Noise Ratio	~62 dB
Sensitivity	-42 dBV Typical
Frequency Response	100 Hz – 15 kHz
Pickup Pattern	Omnidirectional

Typical Application Scenarios

Voice Recognition

Suitable for voice command systems, smart devices, and voice-controlled projects.

Audio Recording

Can be integrated into portable audio recording and embedded recording systems.

Wearable Devices

Its compact size and low power consumption make it suitable for wearable and portable electronics.

IoT Sensors

Useful for sound-level monitoring, noise detection, and other IoT sensing applications.

Robotics

Can add sound detection and audio sensing capabilities to robotic and embedded systems.

Applications

• Voice recognition
• Audio recording
• Smart home devices
• IoT sound sensors
• Noise monitoring
• Wearable electronics
• Robotics
• Voice command systems
• Embedded audio systems
• Portable electronics
• Educational projects
• DIY audio projects

Package Includes

• 1 × ADMP401 MEMS Omnidirectional Microphone Module

Product Disclaimer

Product information provided on our website may not be entirely accurate as specifications can vary between manufacturers and production batches. Please verify the actual product specifications before using the module in critical applications.

Product images are for illustrative purposes only and may differ slightly from the actual product in colour, component placement, or other visual details.

Important Note

Voltage Compatibility

The specified supply voltage is 1.5V–3.3V DC. Ensure that the microphone module is not connected to a voltage above its specified operating range.

Analog Interface

The microphone provides an analog output, which can be connected to a suitable ADC input. Ensure that the connected microcontroller’s ADC input range is compatible with the module’s output signal.

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