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STEVAL-MKI116V1

MEMS microphone demonstration board based on the MP34DB01 and STM32
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The purpose of the STEVAL-MKI116V1 demonstration board is to provide an example of the decoding and streaming of digital MEMS microphone outputs.

The STEVAL-MKI116V1 demonstration board hosts the MP34DB01 (bottom-port digital microphone), working as a sensor, and the STM32F107RC microcontroller, working as an audio decoder.

These microphones are analog-to-digital transducers. They are able to sense sound pressure and convert this signal into a digital signal using the PDM technique.

The STM32 microcontroller decodes the PDM signal coming from the microphones and streams the audio via the USB.

The STEVAL-MKI116V1 demonstration board is a sound card automatically recognized by the PC as an audio device. Connection is made through a USB cable which also supplies the board and then streams the collected audio.

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Data Brief

Key Features

  • Powered and connected to PC through USB
  • Sound card automatically recognized by the PC as an audio device
  • The onboard microphones are digital MEMS devices
  • MEMS microphones provide a high frequency data stream (1 to 3.25 MHz) of 1-bit digital samples (PDM technique)
  • Audio collected from the microphones is sent to the PC through the USB
  • LED status indicator
  • RoHS compliant

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Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DB1599: MEMS microphone demonstration board based on the MP34DB01 and STM32
1.0 355 KB

Application Notes

Description Version Size
pdf
AN4041: APWlink+ microphone USB demonstration boards based on the MP34DT01, MP45DT02, or MP34DB01
2.1 1,032 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
zip
STEVAL-MKI116V1 gerber files
1.0.0 273 KB

Bill of Materials

Description Version Size
pdf
STEVAL-MKI116V1 BOM
2.0.0 83 KB

Schematic Pack

Description Version Size
pdf
STEVAL-MKI116V1 schematics
1.0.0 67 KB

Related Tools and Software

Related Tools and Software

Part Number Description
APWorkbench Audio Processor Workbench software development suite

License Agreement

Description Version Size
pdf
Evaluation products license agreement
1.0 126 KB

Sample & Buy

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Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-MKI116V1ActiveMP34DB01; STM32Buy Direct71.05Distributor reported inventory date: 2014-12-20
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA50
ARROWOrder NowEUROPE30
Farnell Element14Order NowEUROPE51
DIGIKEYOrder NowWORLDWIDE181
MOUSEROrder NowWORLDWIDE91
Ecopack2-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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