STAudioHub USB interface board based on MP34DT01 and STM32

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.

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

Image

×

设计

技术文档

产品规格
Description Version Size
DB1918 DB1918: STAudioHub USB interface board based on MP34DT01 and STM32 2.0 245 KB
应用手册
Description Version Size
AN4227 AN4227: Audio hub demonstration kit supporting the M45DT02, MP34DB01, and MP34DT01 microphones 1.0 1 MB
AN4184 AN4184: Microphone coupon boards STEVAL-MKI129Vx /MKI155Vx based on digital microphones 2.0 1 MB
AN4146 AN4146: STSmartVoice demonstration board STEVAL-MKI126Vx 2.0 3 MB

硬件资源

Board Manufacturing Specifications
Description Version Size
STEVAL-MKI138V1 gerber files 1.0 240 KB
Bill of Materials
Description Version Size
STEVAL-MKI138V1 BOM 2.0 82 KB
Schematic Packs
Description Version Size
STEVAL-MKI138V1 schematics 1.0 1 MB

法律

许可协议
Description Version Size
Evaluation products license agreement 1.0 125 KB

工具和软件

开发工具硬件
Software Development Tools
支持和社区

样片和购买

型号 Marketing Status Unit Price (US$) * Quantity Core Product ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-MKI138V1 Active 67.38 1 STM32F107; MP34DT01 NEC EAR99 ITALY MORE INFO 直接购买 Add to cart DISTRIBUTOR AVAILABILITY
test

(*) 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

质量和可靠性

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-MKI138V1 ActiveCARDIndustrialEcopack2
test

(**) 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.

×