Description
The INMP441 MEMS High Precision Omni-Directional Microphone Module is a digital microphone solution designed for high-quality audio capture in embedded and IoT systems. It features a MEMS capacitive microphone with a built-in 24-bit ADC and communicates via the I2S digital audio interface, ensuring excellent noise immunity and audio clarity.
With its omni-directional pickup pattern, the INMP441 captures sound uniformly from all directions, making it ideal for voice recognition, audio recording, smart assistants, and sound detection projects. The module works seamlessly with ESP32, and can also be interfaced with Arduino and other microcontrollers that support I2S.
This microphone module is widely used in AI, IoT, smart home, robotics, and edge-audio applications where accurate and reliable digital audio input is required.
🔹 Key Features
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High-precision MEMS digital microphone
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Omni-directional sound pickup
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I2S digital audio interface
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Built-in 24-bit ADC
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Low noise and high signal-to-noise ratio
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Excellent immunity to electrical noise
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Compatible with ESP32, Arduino (I2S), STM32
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Ideal for voice recognition & audio processing
🔹 Technical Specifications
| Parameter | Value |
|---|---|
| Microphone Type | MEMS |
| Model | INMP441 |
| Directionality | Omni-Directional |
| Interface | I2S (Digital) |
| ADC Resolution | 24-bit |
| Supply Voltage | 3.3V |
| Output | Digital Audio |
| Signal-to-Noise Ratio | ~61 dB |
| Frequency Response | 60 Hz – 15 kHz |
| Operating Temperature | -40°C to +85°C |
🔹 Applications
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Voice recognition systems
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ESP32 audio projects
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Smart assistants & AI devices
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Sound detection & monitoring
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IoT and smart home automation
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Robotics and edge-AI audio
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