The purpose of the STEVAL-MKI138V3 STAudioHub evaluation board is to demonstrate the decoding and streaming performance of digital MEMS microphone outputs.
The STEVAL-MKI138V3 hosts the MP45DT02 top-port digital microphone, which works 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-MKI138V3 evaluation board is a sound card which is automatically recognized by a 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 is also possible to use the board as an interface for other microphone PCBs (STEVAL-MKI126Vx). In this case is recommended the use of the APWorkbench software tool.
|DB2362: STAudioHub USB interface board based on MP45DT02 and STM32||1.0||425 KB|
|STEVAL-MKI138V3 BOM||1.0||83 KB|
|STEVAL-MKI138V3 schematics||1.0||108 KB|
|Evaluation products license agreement||1.4||128 KB|
|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-MKI138V3||NRND : Not Recommended for New Design. Product is in volume production only to support customers ongoing production.||72||1||MP45DT02||NEC||3A991A2||-||MORE INFO||No availability reported, please contact our Sales office|
|型号||Marketing Status||Package||Grade||RoHS Compliance Grade||Material Declaration**|
(**) 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.