DFRobot
I2S Microphone Module
A compact digital MEMS microphone module based on the MSM261S4030H0 chip, providing 24-bit I2S digital audio output. The built-in I2S interface connects dire...
A compact digital MEMS microphone module based on the MSM261S4030H0 chip, providing 24-bit I2S digital audio output. The built-in I2S interface connects directly to DSPs and microcontrollers without requiring an external codec, simplifying audio capture designs. An on-board SK9822 RGB LED provides visual feedback with two-wire colour control.
The omnidirectional, bottom-ported microphone delivers high sensitivity with a 140 dB SPL acoustic overload point and 57 dB signal-to-noise ratio, making it well-suited for voice capture, audio processing, and AI applications.
Specifications
- Microphone – MSM261S4030H0 MEMS (omnidirectional, bottom-ported)
- Output – 24-bit I2S digital audio
- Sensitivity – −26 dBFS @ 1kHz, 1Pa
- Signal-to-Noise Ratio – 57 dB (A-weighted, 20kHz bandwidth)
- Max Sound Level – 140 dB SPL
- Input Voltage – 3.3V ± 0.2V DC
- Input Current – >1mA
- Operating Temperature – −30°C to +85°C
- On-Board LED – SK9822 RGB LED with two-wire control
- Connector – 16-pin 2.54mm Dupont header
- Dimensions – 15.2 × 9.1mm
Ideal For
- Digital audio capture and voice recognition projects
- AI and machine learning audio applications
- Sipeed MAIX and other I2S-compatible microcontrollers
- DSP and embedded audio processing
Package Contents
- 1× I2S Microphone Module
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- I2S
- I2S is a digital audio interface used to send sound data between chips, such as from a microcontroller to an audio amplifier or DAC. It matters if your project needs cleaner digital audio output than a basic buzzer or PWM signal can provide.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- MEMS microphone
- A tiny microphone made using micro-electromechanical systems, the same style of miniature manufacturing used in many phone sensors. It lets the board detect sound without needing an external microphone, which is useful for noise-reactive projects and simple audio input.
- RGB
- Short for red, green and blue, usually referring to an LED that can mix those three colours. It matters because controlling an RGB LED teaches how separate outputs combine to create different colours.
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Brands
Sensors & Input
Related Tutorials
Free guides on learn.littlebird.com.au
