6049-ADA, Adafruit I2S MEMS Microphone Breakout - ICS-43434
The ICS43434 is a tiny I2S MEMS microphone that detects sound and outputs a digital signal, eliminating the need for analog-to-digital conversion. Unlike traditional electret microphones, this one has no analog output—it's purely digital, with pins for Clock, Data, and Word Select (Left-Right Clock). It supports audio frequencies from 50Hz to 15KHz and features a built-in low-pass filter to suppress frequencies above 24KHz, making it suitable for general audio recording and detection. This microphone is designed for use with microcontrollers or computers that support the I2S protocol, which reads digital audio data directly from the microphone without requiring any additional analog circuitry. The ICS43434 is a mono element, but two can be combined for stereo audio by configuring one for the left and the other for the right channel. Since it operates at 1.6-3.6V logic, it’s compatible with most modern boards, like the RP2040, ESP32, and Raspberry Pi, but not 5V systems. The microphone is bottom-ported, so the sound input should face its base for optimal performance. It is best suited for microcontrollers or single-board computers with built-in I2S support.
Specifications:
- Sensitivity: −26 dB FS ±1dB
- SNR High Performance Mode: 65 dBA
SNR Low Power Mode: 64 dBA - Current Draw High Performance Mode: 490 µA
Current Draw Low Power Mode: 230 µA - Microphone Acoustic Overload Point (AOP) 120 dB SPL
- Sample Rate High Performance Mode: 23 ~ 51.6 kHz
Sample Rate Low Power Mode: 6.25 ~ 18.75 kHz
WARNING
