PDM MEMS Microphone Breakout

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Evelta SKU:
076-3492
Manufacturer Part Number:
3492
₹567.58 inc. GST
₹481.00 ex. GST
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Description

The first thing to note is that this sensor does not provide an 'analog' output like many of our electret microphone assemblies. So it's great for chips that do not have analog inputs. Secondly, the digital interface is a very simplistic pulse density modulation output. It's digital but its not PWM and it's not I2S. You will need to make sure your chip has a PDM interface - most 32-bit processors these days do. PDM is a little like 1-bit PWM. You clock the mic with a 1 MHz - 3 MHz clock rate, and on the data line you'll get a square wave out that syncs with the clock. The data line with be 0 or 1 logic output, with the square wave creating a density that when averaged will result in the analog value out.

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Extra Information

Brand:
Adafruit Industries
Current draw:
0.6mA
Voltage Range:
1.8-3.3V
SNR:
61 dB
Dimensions:
14.0mm x 12.8mm x 2.8mm
Sensitivity:
~-26 dBFS
Weight:
0.5g
Clock rate:
1 - 3.25 MHz

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.