Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H
We have ✅ 6 available of the AF-3421 in our Sydney warehouse.
The Adafruit I2S MEMS Microphone Breakout features the SPH0645LM4H, a tiny digital MEMS microphone with a purely digital I2S output. Unlike analogue electret microphones, this mic sends digital audio data directly to your microcontroller — eliminating analogue noise and the need for an ADC.
With a frequency range of approximately 50 Hz to 15 kHz, this microphone is well suited for general audio recording and sound detection. It works with any microcontroller or single-board computer that has an I2S peripheral, including the Arduino Zero, Feather M0, and Raspberry Pi.
Key Features
- SPH0645LM4H MEMS Microphone – Compact digital microphone with I2S output
- Purely Digital Output – Three pins: Clock, Data, and Word Select (Left-Right) — no analogue conversion needed
- 50 Hz – 15 kHz Range – Suitable for general-purpose audio recording and detection
- Channel Selectable – Set to left or right channel via the Select pin (connect to power or ground)
- Stereo Capable – Pair two microphones on the same I2S bus with different Select pin settings
- Bottom-Ported – Sound enters through the bottom of the board; orient the hole towards the audio source
- 1.6V – 3.6V Operation – 3.3V logic only; not compatible with 5V logic levels
Ideal For
- Digital audio recording with Cortex M-series microcontrollers
- Raspberry Pi voice and sound detection projects
- Noise-free audio input without analogue conversion
- Stereo microphone setups using two breakouts on one I2S bus
Package Contents
- 1× Adafruit I2S MEMS Microphone Breakout (SPH0645LM4H)
Resources
The Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H appears in the following collections:
