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PDM MEMS Microphone Breakout JST SH Connector Adafruit

Adafruit Industries

1 review Write a Review
Manufacturer Part Number:
₹512.12 inc. GST
₹434.00 ex. GST
₹512.12 inc. GST
₹434.00 ex. GST
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PDM is the 'third' kind of microphone you can integrate with electronics, apart from analog or I2S. These microphones are very commonly used in products, but are rarely seen in maker projects. 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.


Technical Specifications

Adafruit Industries
Voltage Range:
Clock rate:
1 - 3.25 MHz
Current draw:
61 dB
~ -26 dBFS
14.0mm x 14.0mm x 4.5mm

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.

    1 Reviews

  • Posted by GURAJAPU RAJA SUMANT on 12th Jun 2021


    No connector provided

    This does not come with the connector. Only Microphone was shipped. Now I am unable to get it from anywhere else as well as it is not a regular sized one. Please provide the connector details if in case you wish to sell these.