MEMS microphone demonstration board based on the MP34DT01 and STM32

The purpose of the STEVAL-MKI117V1 demonstration board is to provide an example of the decoding and streaming of digital MEMS microphone outputs.

The STEVAL-MKI117V1 demonstration board hosts the MP34DT01 (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-MKI117V1 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.

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

Image

×

设计

技术文档

产品规格
Description Version Size
DB1600 DB1600: MEMS microphone demonstration board based on the MP34DT01 and STM32 1.1 357 KB
应用手册
Description Version Size
AN4041 AN4041: APWlink+ microphone USB demonstration boards based on the MP34DT01, MP45DT02, or MP34DB01 2.1 1 MB

硬件资源

Board Manufacturing Specifications
Description Version Size
STEVAL-MKI117V1 gerber files 1.0 249 KB
Bill of Materials
Description Version Size
STEVAL-MKI117V1 BOM 2.1 82 KB
Schematic Packs
Description Version Size
STEVAL-MKI117V1 schematics 1.0 68 KB

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-MKI117V1 Active 71.05 1 MP34DT01; STM32 NEC 3A991A2 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-MKI117V1 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.

×