STMicroelectronics X-NUCLEO-AMICAM1 Analog Microphone Expansion Board | MP23ABS1 4-Channel Audio Shield | For STM32 Nucleo Acoustic Development
Description
SPIDER Automation STMicroelectronics X-NUCLEO-AMICAM1 Analog Microphone Expansion Board offers a fast, robust solution for developing acoustic applications and testing advanced digital signal processing (DSP) algorithms. Designed around the MP23ABS1 analog MEMS microphone, the board is capable of simultaneous, synchronized acquisition and streaming of up to 4 microphone channels at sampling rates reaching 192 kHz.
The board packs three onboard MP23ABS1 microphones alongside five extension slots designed to accommodate external analog microphone coupon boards like the STEVAL-MIC004V1. Signal conditioning is expertly handled by wide-bandwidth ST TSV91x operational amplifiers. With mixed routing through an onboard external ADC and direct STM32-embedded ADC connections, the X-NUCLEO-AMICAM1 provides developers with complete flexibility. Stackable via Arduino UNO R3 and ST morpho connectors, it integrates seamlessly into the STM32Cube software ecosystem complete with free audio capture and USB streaming libraries.
Key Features
- Triple Onboard MEMS Microphones: Features three integrated MP23ABS1 analog MEMS microphones for immediate acoustic testing.
- Coupon Board Expansion Slots: Includes 5 dedicated slots to plug in external analog microphone coupon boards (e.g., STEVAL-MIC004V1).
- Synchronized 4-Channel Acquisition: Enables simultaneous data capture and streaming across up to 4 independent microphone channels.
- High Sampling Bandwidth: Supports high-fidelity audio capture at sampling frequencies up to 192 kHz.
- Wide-Bandwidth Signal Conditioning: Integrates ST TSV91x operational amplifiers to ensure clean signal amplification and low distortion.
- Dual ADC Architecture: Combines an onboard external ADC with direct routing to the host STM32’s internal ADC.
- Comprehensive Software Support: Backed by free STM32Cube development firmware libraries supporting audio capture and USB streaming.
- Stackable Connectors: Equipped with top-and-bottom ST morpho connectors and Arduino UNO R3 headers for multi-board stacking.
Benefits
- Rapid Acoustic Prototyping: Eliminates custom analog frontend design, allowing engineers to begin testing beamforming and voice recognition immediately.
- Flexible System Expansion: Coupon board slots and stackable headers permit custom microphone array geometries and multi-shield configurations.
- High-Fidelity Audio Capture: 192 kHz sampling capability ensures accurate capture of ultrasonic and high-frequency acoustic phenomena.
- Seamless Ecosystem Integration: Native compatibility with STM32 Nucleo boards and STM32Cube IDE simplifies code deployment and debugging.
Applications
- Directional Sound & Beamforming: Microphone array processing for smart speakers, conference systems, and acoustic source localization.
- Industrial Predictive Maintenance: Ultrasonic acoustic monitoring for detecting mechanical wear, bearing failures, and fluid leaks in machinery.
- Smart Home & Voice Control: Voice-activated appliances, keyword spotting, and ambient noise analysis systems.
- Embedded Acoustics Research: Academic and commercial R&D laboratories developing advanced digital signal processing (DSP) and machine listening algorithms.
Package Includes
- 1 x STMicroelectronics X-NUCLEO-AMICAM1 Analog Microphone Expansion Board (STM32 Nucleo Audio Shield)
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand / Series | SPIDER Automation / STMicroelectronics STM32 Nucleo Audio Series |
| Item Type | Analog MEMS Microphone Expansion Board & Audio Shield |
| Model Order Code / SKU | X-NUCLEO-AMICAM1 / SKU-SPIDER-X-NUCLEO-AMICAM1 |
| Silicon Manufacturer | STMicroelectronics |
| Microphone Sensor Type | MP23ABS1 Analog MEMS Microphones (3 Onboard + 5 Coupon Slots) |
| Maximum Sampling Frequency | Up to 192 kHz |
| Analog Amplification Stage | ST TSV91x Wide-Bandwidth Operational Amplifiers |
| Data Conversion Architecture | Onboard External ADC + Direct STM32-Embedded ADC Routing |
| Host Board Compatibility | STMicroelectronics STM32 Nucleo Development Boards |
| Expansion Connectors | Arduino UNO R3 Headers & ST Morpho Connectors (Top & Bottom Stackable) |
| Software & Firmware Ecosystem | STM32Cube Firmware Library (Audio Capture & USB Streaming Support) |
| Board Physical Dimensions | 20 cm Length × 15 cm Width × 3 cm Height (Packaging Dimensions) |
| Package Shipping Weight | 0.1 kg (100 g) |
| Package Shipping Dimensions | 22 cm × 17 cm × 4 cm |
