STEVAL-MKI138V2:STAudioHub USB interface board based on MP34DB01 and STM32

The purpose of STEVAL-MKI138V2 evaluation board is to provide an example of decoding and streaming of digital MEMS microphone outputs.

The STEVAL-MKI138V2 evaluation board hosts the MP34DB01 (top-port digital microphone), working as a sensor and the STM32F107RC microcontroller as an audio decoder.

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

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

The STEVAL-MKI138V2 evaluation board is a sound card that is 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 audio collected from the microphones to the PC.

It can also be used as an interface board for other microphone PCBs (STEVAL-MKI126Vx), in which case it is recommended to use the APWorkbench software tool.

Key Features

  • 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 (powered and connected to PC through USB)
  • LED status indicator
  • RoHS compliant
产品规格
DescriptionVersionSize
DB2392: STAudioHub USB interface board based on the MP34DB01 and STM321.01 MB
Board Manufacturing Specifications
DescriptionVersionSize
STEVAL-MKI138V2 gerber files1.0287 KB
Bill of Materials
DescriptionVersionSize
STEVAL-MKI138V2 BOM1.0160 KB
Schematic Packs
DescriptionVersionSize
STEVAL-MKI138V2 schematic1.0848 KB
许可协议
DescriptionVersionSize
Evaluation products license agreement1.0125 KB
样片和购买
型号Unit Price (US$) *QuantityCore ProductECCN (EU)ECCN (US)Country of Origin
STEVAL-MKI138V267.381MP34DB01; STM32NEC3A991A2-
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
STEVAL-MKI138V2CARDIndustrialEcopack2
STAudioHub USB interface board based on the MP34DB01 and STM32 STEVAL-MKI138V2
STAudioHub USB interface board based on the MP34DB01 and STM32 STEVAL-MKI138V2
STAudioHub USB interface board based on the MP34DB01 and STM32 STEVAL-MKI138V2
STAudioHub USB interface board based on the MP34DB01 and STM32 STEVAL-MKI138V2
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2