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STEVAL-MKI138V1

STAudioHub USB interface board based on MP34DT01 and STM32
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The purpose of STEVAL-MKI138V1 is to provide a demonstration of decoding and streaming of digital MEMS microphone outputs.

The STEVAL-MKI138V1 demonstration board hosts the MP34DT01 (top-port digital microphone), working as a sensor and the STM32F107RC microcontroller, which functions as an audio decoder.

These microphones are analog-to-digital transducers. They are capable of sensing sound pressure and converting it to a digital signal using the PDM technique.

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

The STEVAL-MKI138V1 is a sound card automatically recognized by the PC as an audio device. Connection is made through a USB cable, which both powers the board and streams the audio collected from the microphones to the PC.

It is also possible to use the STEVAL-MKI138V1 as an interface board for other microphone boards (STEVAL-MKI126Vx), in which case use of the APWorkbench software tool is recommended.

pdf データシート
Data Brief

Key Features

  • Powered and connected to PC through USB
  • Sound card automatically recognized by the PC as an audio device.
  • 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 USB
  • LED status indicator
  • RoHS compliant

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デザイン・リソース

トップ

Technical Documentation

Product Specifications

Description Version Size
pdf
DB1918: STAudioHub USB interface board based on MP34DT01 and STM32
2.0 246 KB

Application Notes

Description Version Size
pdf
AN4146: STSmartVoice demonstration board STEVAL-MKI126Vx
2.0 3,511 KB
pdf
AN4184: Microphone coupon boards STEVAL-MKI129Vx based on the MP45DT02, MP34DB01, and MP34DT01
1.0 1,086 KB
pdf
AN4227: Audio hub demonstration kit supporting the M45DT02, MP34DB01, and MP34DT01 microphones
1.0 1,572 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
zip
STEVAL-MKI138V1 gerber files
241 KB

Bill of Materials

Description Version Size
pdf
STEVAL-MKI138V1 BOM
83 KB

Schematic Pack

Description Version Size
pdf
STEVAL-MKI138V1 schematics
1,471 KB

Related Tools and Software

Related Tools and Software

製品型名 Description
APWorkbench Audio Processor Workbench software development suite

サンプル& 購入

トップ
製品型名 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-MKI138V1ActiveSTM32F107; MP34DT01Buy Direct67.37Distributor reported inventory date: 2014-07-23
Distributor NameRegionStockMin. order
ARROWOrder NowEUROPE50
Farnell Element14Order NowEUROPE91
DIGIKEYOrder NowWORLDWIDE111
MOUSEROrder NowWORLDWIDE91
Ecopack2-

(*)ユニット当たりの推奨再販価格(米ドル建て)は、あくまで予算的な参考情報としてご利用下さい。現地通貨ベースでのお見積り、価格については 弊社セールスオフィス もしくは 販売代理店 にお問合せ下さい。
(**)弊社ホームページで入手できるMaterial Declaration(材料宣誓書)のフォームは、各パッケージ・タイプで最も一般的に使用されるパッケージに基づいた包括的な文書です。そのため、特定のデバイスについて100%正確ではない可能性があります。特定のデバイスに関する情報については、 弊社セールスオフィス にお問合せ下さい。
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