Product overview
Description
The STEVAL-STWINMA2 microphone array expansion adds advanced audio sensing capabilities to the STEVAL-STWINKT1B (and STEVAL-STWINKT1) SensorTile Wireless Industrial Node (STWIN) kit for high frequency vibration monitoring applications.
The board includes four low-power, high signal-to-noise ratio (SNR) IMP23ABSU capacitive sensing microphones, supported by a very low drop voltage, low quiescent current, and low-noise voltage regulator, ideal for battery-powered applications such as STWIN.
The expansion board is connected via a dedicated 12-pin connector to the core system board.
The combination of STWIN and STEVAL-STWINMA2 is supported thanks to the software examples provided within the X-CUBE-MEMSMIC1 expansion software package for STM32Cube.
The package includes one example of microphone data steaming via USB and one example of ultrasound condition monitoring (UltrasoundFFT) that calculates the FFT of the analog microphone signal and streams the result to a PC GUI via USB.
The microphone sampling rate is set by default to 192 kHz whereas the microphone bandwidth is up to 80 kHz.
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All features
- Analog microphone array expansion for STEVAL-STWINKT1B (and STEVAL-STWINKT1)
- Connects to the STWIN core system board through a dedicated 12-pin connector
- 3 V to 5.5 V power supply input
- 4 mm square-shaped differential microphone array
- Four IMP23ABSU high-performance, single-ended, analog, bottom-port MEMS microphones
- LDK130 300 mA low quiescent current very low noise LDO
- Ultrasound frequency response up to 80 kHz
- On-board audio-grade quad ADC
- Serial audio interface (SAI) digital output
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All resources
| Resource title | Version | Latest update | Actions | Details | Download |
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Board Manufacturing Specifications (1)
| Resource title | Version | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| ZIP | 1.0 | 29 Jun 2023 | 29 Jun 2023 |
Bill of Materials (1)
| Resource title | Version | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| 1.0 | 29 Jun 2023 | 29 Jun 2023 |
Schematic Pack (1)
| Resource title | Version | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| 1.0 | 29 Jun 2023 | 29 Jun 2023 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | WEEE Compliant | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|---|
| STEVAL-STWINMA2 | NRND Not recommended for New Design. Product is in volume production only to support customers ongoing production. EN | CARD | Industrial | Ecopack2 | Yes | - | - | |
STEVAL-STWINMA2
Package:
CARDMaterial 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.
Sample & Buy
| Budgetary Price (US$)*/Qty | Supplier | Core Product | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-STWINMA2 | 2 distributors | NRND | ITALY | EAR99 | NEC | | ST | IMP23ABSUTR |
Buy Direct at ST (*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors