INMP441 Digital Microphone with I2S Interface – High-Quality Audio for Embedded Projects

The INMP441 digital microphone module is a compact and efficient audio input solution for modern electronics. Featuring an I2S interface, it transmits digital audio data directly to microcontrollers without the need for an external ADC. This makes it an excellent choice for Arduino, ESP32, Raspberry Pi, and other embedded platforms.

Perfect for IoT devices, voice-controlled systems, and smart speakers, this microphone offers clear, low-noise audio capture in a small form factor.

✅ Why Use the INMP441 Microphone Module?

Unlike traditional analog microphones, this module outputs audio in digital format, ensuring high signal quality and minimal interference. It integrates seamlessly with microcontrollers that support I2S communication, making it popular for AI voice assistants, portable recorders, and smart home devices.

The omnidirectional design means it captures sound from all directions, ideal for voice recognition and audio analysis applications.

Key Features

• I2S Digital Output: No additional ADC required
• Omnidirectional Audio Capture: Detects sound from any angle
• Energy Efficient: Works well in battery-powered systems
• Compact Size: Fits into small enclosures and wearable devices
• Broad Compatibility: Supports Arduino, ESP32, STM32, and Raspberry Pi

Technical Specifications

• Interface: I2S (digital audio output)
• Supply Voltage: 1.8V to 3.3V (typical 3.3V)
• Frequency Range: 60 Hz to 15 kHz
• Microphone Type: MEMS omnidirectional
• Use Cases: Voice recognition, smart speakers, IoT applications

️ Common Applications

This microphone is widely used in:

• Smart Voice Assistants – Build Alexa or Google Assistant alternatives
• Smart Home Devices – Add voice control to IoT gadgets
• DIY Audio Recorders – Capture clear sound for custom projects
• Speech Recognition Systems – Ideal for AI-driven projects
• Portable Devices – Great for low-power audio input in wearables

✅ Advantages of INMP441

• Noise-Free Digital Output: Maintains audio quality without external ADCs
• Easy Wiring: Simple I2S connection for microcontrollers
• Compact and Lightweight: Perfect for small enclosures
• Power Efficient: Suitable for portable and IoT projects
• Reliable Performance: Consistent audio capture in real time

⚡ Working Principle

The module uses MEMS technology to sense sound waves and convert them into electrical signals. These are processed internally and sent out as I2S digital data, reducing external circuitry and improving audio quality. This makes it ideal for embedded systems where space and performance matter.

Package Includes

• 1 x INMP441 Digital Microphone Module with I2S Interface

✅ Why Buy from Electroxbd?

When you purchase from Electroxbd, you get:

• ✅ 100% original and tested components
• ✅ Competitive prices in Bangladesh
• ✅ Fast nationwide delivery – Dhaka, Rajshahi, Chattogram, Sylhet, Khulna
• ✅ Expert technical support for integration
• ✅ Secure online ordering and payment options

Start Building Smarter Audio Projects Today!

Upgrade your IoT and embedded systems with the INMP441 microphone module for reliable, high-quality audio input. Whether you’re working on voice-controlled devices, AI-based applications, or sound detection systems, this module offers the performance and simplicity you need.