INMP441 I2S Microphone Module — High SNR MEMS Mic for ESP32
INMP441 I2S MEMS Microphone Module — 61 dBA SNR Digital Output
The INMP441 is a high-performance MEMS microphone with I2S digital output, offering 61 dBA signal-to-noise ratio and 24-bit audio resolution. It's ideal for voice recognition, sound monitoring, and audio streaming projects using microcontrollers like ESP32. With low power consumption and easy I2S connectivity, it delivers clear, noise-free audio capture for embedded systems.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 1.62V – 3.6V (module typ. 3.3V) |
| Output Format | I2S, 24-bit |
| Sensitivity | -26 dBFS |
| Signal-to-Noise Ratio | 61 dBA |
| Frequency Response | 60 Hz – 15 kHz |
| Current Consumption | <1.5 mA |
What You Can Build With This
- Voice-controlled home assistant with ESP32 and Alexa/Google SDK
- IoT sound level meter for real-time noise monitoring and logging
- Portable high-quality audio recorder with SD card storage
- Security alarm that triggers on specific sound patterns like glass breaking
Compatibility
The INMP441 works with any microcontroller that supports I2S protocol, such as ESP32, ESP8266, Raspberry Pi, STM32, and Arduino boards with appropriate I2S libraries. It pairs seamlessly with 3.3V logic level boards; level shifting might be needed for 5V systems. Common pairings include ESP32 for IoT and Raspberry Pi for advanced audio processing.
Wiring Notes
Connect VDD to 3.3V, GND to ground, SD (Serial Data) to the I2S data input pin, WS (Word Select) to the I2S LRCLK, and SCK (Serial Clock) to the I2S bit clock. Some modules include an L/R pin that can be pulled high or low to assign left or right channel. Keep wires short to minimize digital noise.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
The ATmega328P on Arduino Uno lacks native I2S peripherals; compatibility requires bit‑banging libraries and is limited. It works best with 32‑bit boards like ESP32 or Arduino Zero that have built‑in I2S support.
Can I use two INMP441 mics for stereo recording?
Yes, two modules can be configured for left and right channels by setting their L/R pins differently. Ensure your microcontroller's I2S interface supports stereo mode and provides sufficient processing power for dual‑channel audio.
How does I2S improve audio quality over analog mics?
I2S delivers digital audio directly, avoiding analog noise and the need for an external ADC. This results in cleaner signals and simpler circuit design, especially in electrically noisy environments.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items