STMicroelectronics STEVAL-MIC005V1

Overview

STEVAL-MIC005V1 from STMicroelectronics is a microphone coupon daughterboard featuring four MP23DB02MM bottom-port digital MEMS microphones, supporting PDM single-bit output, 122 dBSPL acoustic overload point, and multi-performance mode operation with identical -26 dBFs ±1 dB sensitivity across modes. It interfaces directly with X-NUCLEO-CCA02M2 for STM32 Nucleo evaluation.

For engineers reviewing the STEVAL-MIC005V1 datasheet, STEVAL-MIC005V1 pinout, STEVAL-MIC005V1 application, or STEVAL-MIC005V1 equivalent, key selection factors include PDM interface compatibility, dual-mode SNR (64 dB low-power), supply voltage range (1.6–3.6 V), acoustic overload margin, and modular coupon-based physical layout for individual microphone validation.

Technical Context

The board implements four independent MP23DB02MM microphones, each with dedicated PDM data output (DOUT), clock input (CLK), left/right channel select (L/R), power (VDD), and ground (GND) terminals. All microphones share identical electrical characteristics and operate synchronously under common clock control.

Each microphone supports two configurable performance modes-low-power and high-performance-with identical sensitivity (-26 dBFs ±1 dB) but differing SNR (64 dB in low-power mode) and current consumption. The coupon design enables mechanical detachment of individual microphone PCBs for isolated acoustic testing.

Key Specifications

Availability

STEVAL-MIC005V1 is available at Aetrix Electronics and suitable for microphone array prototyping, STM32-based voice interface development, and MEMS acoustic sensor validation requiring stable component supply and modular test flexibility.

Supply support for STEVAL-MIC005V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MEMS, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The STEVAL-MIC005V1 belongs to ST's evaluation board portfolio for digital MEMS microphones, developed specifically to accelerate PDM-based audio subsystem validation and multi-microphone system integration with STM32 ecosystem hardware.

FAQ

Is STEVAL-MIC005V1 compatible with STM32CubeMX audio configuration tools?

Yes - STEVAL-MIC005V1 connects directly to X-NUCLEO-CCA02M2, which is fully supported by STM32CubeMX for PDM microphone initialization, clock configuration, and DMA-based audio streaming setup. The board's fixed PDM timing aligns with STM32 HAL_PDM drivers for automatic register mapping.

Can individual microphones be used independently after detaching the coupons?

Yes - each coupon contains a complete MP23DB02MM circuit with bypass capacitors (1 µF + 100 nF), VDD, GND, CLK, L/R, and DOUT pins routed to a 6-pin header (J1). Detached coupons retain full electrical functionality and can be interfaced with custom carriers or test fixtures.

What is the maximum recommended PDM clock frequency for STEVAL-MIC005V1?

The MP23DB02MM microphones on STEVAL-MIC005V1 support PDM clock frequencies up to 3.072 MHz. At this rate, the board delivers 16-bit equivalent PCM audio at 48 kHz after decimation - matching standard audio sampling requirements for voice and environmental sound capture.

Does STEVAL-MIC005V1 support time-of-arrival (TOA) measurements for beamforming?

Yes - all four microphones share synchronous clocking and exhibit matched group delay (<100 ns inter-channel skew), enabling precise phase-coherent sampling required for real-time TOA estimation and digital beamforming algorithms in embedded voice processing applications.