STMicroelectronics STEVAL-MKI099V1

Overview

STEVAL-MKI099V1 from STMicroelectronics is an adapter board designed to interface the LPR403AL MEMS pressure sensor with a standard DIL-24 socket, enabling rapid prototyping and evaluation. It provides full pinout access, integrated decoupling (10 µF + 100 nF + 33 nF on VDD), RoHS compliance, and direct compatibility with the STEVAL-MKI109V2 motherboard for PC-based sensor data acquisition via Unico GUI.

For engineers reviewing the STEVAL-MKI099V1 datasheet, STEVAL-MKI099V1 pinout, STEVAL-MKI099V1 application, or STEVAL-MKI099V1 equivalent, this board serves as a validated hardware bridge between LPR403AL sensors and host microcontroller systems-particularly where fast sensor integration, signal routing verification, and GUI-driven characterization are required.

Technical Context

The STEVAL-MKI099V1 implements passive signal routing without active components: all 24 pins of the DIL-24 footprint map directly to LPR403AL's functional terminals-including four differential output pairs (4xOUT1/4xOUT2), dual supply rails (VDD, FILTVDD), reference voltage (Vref), high-pass filter enable (HP), self-test (ST), power-down (PD), and oscillator control (VCONT). No level-shifting, amplification, or digital conversion occurs on-board.

It supports analog output evaluation only-no onboard ADC, MCU, or USB interface. Signal integrity relies on external termination and the connected motherboard's analog front-end; the board includes no filtering beyond basic decoupling and does not condition OUTX/OUTY differential outputs beyond pin breakout.

Key Specifications

Availability

STEVAL-MKI099V1 is available at Aetrix Electronics and suitable for MEMS sensor evaluation, industrial pressure sensing prototyping, and educational lab setups requiring stable component supply and documented interface validation.

Supply support for STEVAL-MKI099V1 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, designing and manufacturing microcontrollers, sensors, power ICs, and analog/mixed-signal devices for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL (ST Evaluation) product line-engineered to accelerate customer adoption of ST MEMS sensors by providing standardized, ready-to-use hardware interfaces aligned with their ecosystem tools like Unico GUI and STM32-based motherboards.

FAQ

Does STEVAL-MKI099V1 include a microcontroller or USB interface?

No. The board contains only passive components: resistors, capacitors, and a DIL-24 socket. It has no MCU, USB transceiver, or digital logic. Communication and data acquisition depend entirely on the connected STEVAL-MKI109V2 motherboard, which hosts the STM32 processor and USB interface.

Can STEVAL-MKI099V1 be used independently without STEVAL-MKI109V2?

No. It lacks power regulation, signal conditioning, or host interface circuitry. It functions solely as a breakout and routing adapter-requiring connection to STEVAL-MKI109V2 (or equivalent custom carrier with compatible pin mapping and analog input capability) to power the LPR403AL and acquire its analog outputs.

What is the role of the 33kΩ and 10kΩ resistors (R1, R3) on the board?

R1 (33 kΩ) and R3 (10 kΩ) form part of the LPR403AL's external bias network for its internal operational amplifiers-specifically setting gain and common-mode levels for the 4xOUT1/4xOUT2 differential outputs per ST's recommended application circuit in the LPR403AL datasheet.

Is STEVAL-MKI099V1 still in active production?

No. As confirmed in DocID17676 Rev 2 (Nov 2013), STMicroelectronics lists STEVAL-MKI099V1 as "Obsolete Product(s)". Aetrix Electronics supplies remaining genuine stock with full traceability, but no new manufacturing or ST support is available.