STEVAL-MKI117V2
MEMS microphone demonstration board based on the MP45DT02 and STM32-
Active
The purpose of the STEVAL-MKI117V2 demonstration board is to provide an example of the decoding and streaming of digital MEMS microphone outputs.
The STEVAL-MKI117V2 demonstration board hosts the MP45DT02 (top-port digital microphone), working as a sensor, and the STM32F107RC microcontroller, working as an audio decoder.
These microphones are analog-to-digital transducers, in other words, 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-MKI117V2 demonstration board is a sound card automatically recognized by the PC as an audio device. The connection is made through a USB cable which also supplies the board and then streams the collected audio.
Download
Datasheet
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
Design Resources
TopTechnical Documentation
Product Specifications
| Description | Version | Size |
|---|---|---|
DB1601: MEMS microphone demonstration board based on the MP45DT02 and STM32
|
1.0 | 348 KB |
Application Notes
| Description | Version | Size |
|---|---|---|
|
AN4041: APWlink+ microphone USB demonstration boards based on the MP34DT01, MP45DT02, or MP34DB01
|
2.0 | 1,032 KB |
Hardware Resources
Board Manufacturing Specification
| Description | Version | Size |
|---|---|---|
STEVAL-MKI117V2 gerber files
|
1.0.0 | 250 KB |
Bill of Materials
| Description | Version | Size |
|---|---|---|
|
STEVAL-MKI117V2 BOM
|
2.0.0 | 83 KB |
Schematic Pack
| Description | Version | Size |
|---|---|---|
|
STEVAL-MKI117V2 schematics
|
1.0.0 | 68 KB |
Sample & Buy
Top| Part Number | Marketing Status | Core Product | Order From ST | Unit Price (US$)* @ | Distributor Availability | RoHS Compliance Grade | Download Material Declaration** |
|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-MKI117V2 | Active | MP45DT02; STM32 | 71.05 |
| Ecopack2 | - | ||||||||||||||||
(*) 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 (**) 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. |
||||||||||||||||||||||
