STMicroelectronics STEVAL-MIC007V1

Overview

STEVAL-MIC007V1 from STMicroelectronics is a microphone coupon evaluation daughterboard hosting four IMP23ABSU analog bottom-port MEMS microphones, designed for ultrasound-bandwidth acoustic testing and predictive maintenance prototyping. It operates from 1.52 V to 3.6 V, delivers 130 dBSPL acoustic overload point, -38 dBV ±1 dB sensitivity, and supports up to 80 kHz frequency response.

For engineers reviewing the STEVAL-MIC007V1 datasheet, STEVAL-MIC007V1 pinout, STEVAL-MIC007V1 application, or STEVAL-MIC007V1 equivalent, key selection criteria include ultrasonic bandwidth validation, low-power microphone array integration, RF-immune analog signal acquisition, and detachable coupon-based test methodology.

Technical Context

The board implements four independent IMP23ABSU transducers on a single PCB, each with dedicated analog output routing and decoupling. Each microphone features omnidirectional response, enhanced RF immunity via internal shielding, and ultra-low quiescent current (≤150 μA).

Designed as a coupon-style evaluation platform, the PCB allows mechanical separation into four individual microphone sub-boards for isolated performance characterization. The analog outputs are unbuffered and require external biasing (2.2 V typical) per ST's recommended interface circuit.

Key Specifications

Availability

STEVAL-MIC007V1 is available at Aetrix Electronics and suitable for ultrasound sensing, predictive maintenance systems, and RF-immune acoustic test benches requiring stable component supply and rapid evaluation turnaround.

Supply support for STEVAL-MIC007V1 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, delivering silicon solutions for smart driving, power management, sensing, and microcontrollers.

The STEVAL evaluation board series targets rapid prototyping of ST's sensing and analog products, specifically enabling fast functional validation and system-level integration of MEMS, analog front-ends, and signal-conditioning components.

FAQ

What is the purpose of the coupon design on STEVAL-MIC007V1?

The coupon design allows physical separation of the PCB into four individual microphone sub-boards, each hosting one IMP23ABSU device. This enables isolated acoustic calibration, placement flexibility in multi-sensor arrays, and independent signal path verification without crosstalk or shared supply noise.

Does STEVAL-MIC007V1 include signal conditioning or ADC functionality?

No. STEVAL-MIC007V1 provides raw analog outputs only - each IMP23ABSU requires external DC bias (typically 2.2 V) and is intended for connection to an external amplifier or ADC input. No onboard op-amps, filters, or digitization circuitry are included.

Can STEVAL-MIC007V1 be used for ultrasound time-of-flight (ToF) measurements?

Yes. With its verified 80 kHz bandwidth and phase-coherent analog outputs across all four microphones, the board supports ultrasound ToF applications when paired with a synchronized sampling system and appropriate excitation source (e.g., piezoelectric transducer).

Is RoHS compliance documented for STEVAL-MIC007V1?

Yes. STEVAL-MIC007V1 is explicitly stated as RoHS compliant in the official STMicroelectronics data brief DB4237 (Rev 1, November 2020), covering both the PCB assembly and all mounted components including the IMP23ABSU microphones.