STMicroelectronics STEVAL-MKI199V1K

Overview

STEVAL-MKI199V1K from STMicroelectronics is an evaluation kit comprising an ultra-low-current (8 µA typical) analog temperature probe based on the STLM20 sensor in a 6-lead DFN package, connected via flat cable to the STEVAL-MKIGIBV1 adapter board for DIL24 socket interface with STEVAL-MKI109V3 motherboards. It delivers ±0.5°C accuracy from −20°C to +100°C and enables non-intrusive thermal monitoring on PCBs or components.

For engineers reviewing the STEVAL-MKI199V1K datasheet, STEVAL-MKI199V1K pinout, STEVAL-MKI199V1K application, or STEVAL-MKI199V1K equivalent, this kit supports rapid validation of STLM20-based thermal sensing in space-constrained embedded systems, real-time thermal profiling with Unico GUI, and integration into STM32F401-based sensor hubs requiring analog output compatibility and minimal self-heating.

Technical Context

The kit implements a passive analog temperature sensing chain: STLM20 outputs a ratiometric voltage (7.5 mV/°C slope, 0.5 V at 25°C) referenced to VDD (2.4 V), routed through decoupled power (1 µF + 100 nF) and signal conditioning (470 Ω series resistor) before reaching the motherboard's ADC input. No digital interface or firmware is embedded in the probe itself.

STEVAL-MKIGIBV1 serves as a mechanical and electrical bridge - it maps STLM20's 4-pin functional interface (V+, GND, VOUT, NC) to a standard 24-pin DIL socket while preserving analog signal integrity and providing solder jumpers (R1/R2 = 0 Ω) for optional signal routing flexibility. It does not contain active logic or microcontroller resources.

Key Specifications

Availability

STEVAL-MKI199V1K is available at Aetrix Electronics and suitable for thermal validation in industrial motor drives, medical wearable sensors, automotive cabin ambient monitoring, and IoT edge node development requiring stable component supply and traceable evaluation hardware.

Supply support for STEVAL-MKI199V1K 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 devices for industrial, automotive, and consumer applications.

This kit belongs to ST's MEMS & Sensors Evaluation Platform family, engineered to accelerate prototyping of analog and digital sensor subsystems using standardized mechanical interfaces and host-agnostic GUI tools like Unico.

FAQ

What is the role of the STEVAL-MKIGIBV1 adapter board?

The STEVAL-MKIGIBV1 is a passive breakout adapter that maps the 4-terminal STLM20 sensor (V+, GND, VOUT, NC) to a standard 24-pin DIL socket footprint. It integrates mandatory decoupling capacitors (1 µF and two 100 nF) and a 470 Ω series resistor on the analog output path to ensure signal stability when interfacing with the STEVAL-MKI109V3 motherboard's ADC input.

Does the STEVAL-MKI199V1K require firmware or driver installation?

No firmware or driver installation is required on the probe or adapter board. The kit operates as an analog signal source. Communication and data visualization depend entirely on the host STEVAL-MKI109V3 motherboard running the Unico GUI or custom software - the probe itself contains no programmable logic or digital interface circuitry.

Can the STLM20 sensor be replaced with another temperature IC on this board?

No - the STEVAL-MKI199V1K is a fixed-function evaluation kit with the STLM20 permanently mounted in its DFN package on the probe head. The adapter board (STEVAL-MKIGIBV1) has no provision for alternative sensor mounting or rework; its layout and decoupling are optimized specifically for STLM20's 2.4 V supply and analog output characteristics.

What is the maximum recommended cable length between probe and adapter?

The flat cable supplied with STEVAL-MKI199V1K is 150 mm long and characterized for signal integrity under typical lab conditions. Extending beyond 200 mm introduces measurable noise and offset drift due to unshielded routing; ST recommends maintaining ≤150 mm unless external shielding and guard traces are added per DB3786 layout guidelines.