INMP441 MEMS High Precision Omnidirectional Microphone I2S SNR Low Power Module

The INMP441 MEMS microphone module is a high-precision digital microphone with I2S output, designed for microcontrollers and embedded systems. It provides clear audio capture, low noise, and very low power consumption, making it ideal for voice recognition, smart assistants, IoT, and sound detection projects.

Compatible with ESP32, Raspberry Pi, STM32, Arduino with I2S support, and other DSP platforms.

The INMP441 MEMS Omnidirectional Microphone Module is a professional grade digital microphone that outputs audio directly via the I2S interface, eliminating the need for analog amplification circuits.

Unlike traditional analog microphones, the INMP441 provides stable, interference-free audio capture and excellent signal quality thanks to its high signal-to-noise ratio (SNR). This makes it perfect for voice processing and real-time audio applications.

The module operates with very low power consumption and works directly with modern microcontrollers such as ESP32 and Raspberry Pi, making integration simple and reliable.

It is widely used in smart home devices, voice assistants, sound monitoring systems, and AI audio projects.

Key Features

✔ Digital I2S output, no analog noise interference
✔ High signal to noise ratio audio capture
✔ Omnidirectional sound pickup
✔ Low power consumption
✔ Small and lightweight module
✔ Easy interface with ESP32 and Raspberry Pi
✔ Stable audio quality for voice recognition systems

Technical Specifications

• Microphone Type: MEMS Omnidirectional

• Interface: I2S Digital Output

• Operating Voltage: 3.3V

• SNR: High precision low noise

• Power Consumption: Low power

• Directionality: Omnidirectional

• Compatible Boards: ESP32, Raspberry Pi, STM32, I2S supported controllers

Applications

• Voice recognition systems

• Smart assistants and AI projects

• Sound level detection

• Audio recording projects

• IoT monitoring devices

• Robotics and automation

• Speech processing experiments

Pinout

• VCC → 3.3V

• GND → Ground

• L/R → Channel select

• BCLK → Bit Clock

• WS → Word Select

• DOUT → Digital Audio Data

Package Includes

1 × INMP441 I2S MEMS Microphone Module