Adafruit I2S MEMS Microphone Breakout – SPH0645LM4H
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TECHNICAL DOCUMENTATION FILES
Description
Listen to this good news – we now have a breakout board for a super tiny I2S MEMS microphone. MEMS mics can detect sound and convert it to voltage, but they’re way smaller and thinner. This microphone doesn’t even have analog out, it’s purely digital. The I2S is a small, low-cost MEMS mic with a range of about 50Hz – 15KHz, good for just about all general audio recording/detection.
For many microcontrollers, adding audio input is easy with one of our analog microphone breakouts. But as you get to bigger and better microcontrollers and microcomputers, you’ll find that you don’t always have an analog input, or maybe you want to avoid the noise that can seep in with an analog mic system. Once you get past 8-bit micros, you will often find an I2S peripheral, that can take digital audio data in! That’s where this I2S Microphone Breakout comes in.
The microphone is a single mono element. You can select whether you want it to be on the Left or Right channel by connecting the Select pin to power or ground. If you need stereo, pick up two microphones!
This I2S MEMS microphone is bottom ported, so make sure you have the hole in the bottom facing out towards the sounds you want to read. It’s a 1.6-3.6V max device only, so not for use with 5V logic (it’s really unlikely you’d have a 5V-logic device with I2S anyways). Many beginner microcontroller boards don’t have I2S, so make sure it’s a supported interface before you try to wire it up! This microphone is best used with Cortex M-series chips like the Arduino Zero, Feather M0, or single-board computers like the Raspberry Pi.
Technical Details
Revision History:
- As of November 23, 2022 – we’ve updated this PCB with Adafruit Pinguin to make a lovely and legible silkscreen – you may get the new PCB or the older version with vector fonts – both are identical other than the fancy silkscreen.
Product Dimensions: 16.7mm x 12.7mm x 1.8mm / 0.7″ x 0.5″ x 0.1″
Product Weight: 0.4g / 0.0oz
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