Product description
I2S MEMS microphone. A breakout board based on the digital MEMS microphone ICS-43434, intended for audio capture in microcontroller and embedded applications. The module uses an I2S interface, enabling direct digital audio transmission without the need for analog signal processing or an external ADC.
Unlike traditional analog microphone solutions, this module delivers a clean digital signal via separate lines for clock, data, and word select (left/right channel). This minimizes noise and simplifies integration in systems where I2S is already implemented, such as ESP32, RP2040, RP2350, or ARM Cortex-M based platforms.
The microphone has a frequency range of approximately 50 Hz to 15 kHz, making it suitable for general sound detection and recording. The built-in low-pass filtering limits frequencies above 24 kHz and contributes to stable signal processing.
The module is designed for easy integration into prototypes and can be used on a breadboard (with included, not soldered, pin headers) or soldered directly into an application. The digital output supports up to 24-bit audio data without the need for additional configuration, simplifying the development process.
The module is particularly suitable for projects where no analog input is available or where high immunity to interference is required, such as sound detection, voice control, and signal analysis in embedded systems.
Specifications:
- Interface: I2S (digital audio output)
- Microphone: TDK InvenSense ICS-43434 MEMS
- Frequency range: approx. 50 Hz - 15 kHz
- Resolution: up to 24-bit
- Supply voltage: 1.6 - 3.6 V
- Current consumption: approx. 230–490 µA depending on operating mode
- SNR: approx. 64 - 65 dBA
- Acoustic overload point: 120 dB SPL
- Output signals: Clock, Data, Word Select
- Channel selection: Left or right via select pin
- Mounting: Breakout for breadboard or soldering
- Applications: Sound detection, recording, voice control, embedded systems