INMP441 I2S MEMS Microphone Module Omnidirectional Sensor ESP32 Arduino

🔧 INMP441 I2S MEMS Microphone Module | AuscomTech

The INMP441 is a compact digital microphone module designed for high-quality audio capture in embedded electronics projects.

It provides 24-bit digital audio output through an I2S interface, allowing direct connection to compatible microcontrollers and processors without requiring an external audio codec.

Commonly used for voice input, sound detection, audio sampling, smart devices, and low-power portable electronics.

⭐ Key Features

• I2S Digital Interface – supports direct digital audio connection to compatible controllers and processors
• Omnidirectional Pickup – captures sound from all directions for flexible placement
• MEMS Microphone Design – compact, stable, and suitable for embedded audio applications
• 24-bit Audio Data – provides high-resolution digital output for audio processing projects
• High SNR Performance – 61 dBA signal-to-noise ratio for clearer near-field sound capture
• Low Power Operation – approx. 1.4 mA current consumption for portable and battery-powered designs
• Wide Frequency Response – 60 Hz to 15 kHz response range for voice and general audio input

📊 Technical Specifications

• Model: INMP441
• Module Type: Digital MEMS microphone sensor module
• Pickup Pattern: Omnidirectional
• Interface: I2S
• Audio Output: 24-bit digital data
• Supply Voltage: 3.3V–5V
• Sensitivity: -26 dBFS
• Signal-to-Noise Ratio: 61 dBA
• Frequency Response: 60 Hz to 15 kHz
• Current Consumption: approx. 1.4 mA
• Power Supply Rejection: 75 dBFS
• Operating Temperature: -40°C to +85°C
• Module Dimensions: approx. 14 × 14 × 3 mm
• Condition: New

🧩 Typical Applications

• ESP32 audio input projects
• Arduino-compatible digital audio builds
• Raspberry Pi audio experiments
• Voice capture and speech detection
• Smart home devices
• Teleconferencing systems
• Remote control audio input
• Sound monitoring and audio processing

⚠️ Important Notes

• Requires a controller or processor with I2S support.
• This module outputs digital audio only and does not provide an analog microphone signal.
• Check wiring, pinout, and logic compatibility before connecting to your board.
• Board colour and silkscreen may vary slightly between production batches.

📦 Package Includes

• 1 × INMP441 I2S MEMS Microphone Module

🔗 Recommended Accessories (Not Included)

• ESP32 development board – suitable for I2S audio capture
• Dupont jumper wires – for quick module connection
• Breadboard – for prototyping and testing
• Pin headers – for soldered installation