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STMicroelectronics STEVAL-MKI125V1

Name: STEVAL-MKI125V1
Brand: STMicroelectronics
SKU: STEVAL-MKI125V1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STEVAL-MKI125V1

Manufacturer:: STMicroelectronics

Category:: Expansion Boards, Daughter Cards

Package:

Datasheet:: STEVAL-MKI125V1.pdf

Description:: DIL24 ADAPTER BOARD A3G4250D

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,148

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Product details

Overview

STEVAL-MKI125V1 from STMicroelectronics is a DIL24 socket-compatible adapter board designed exclusively for evaluating the A3G4250D 3-axis digital gyroscope. It provides full pin access, on-board decoupling (10 µF + 100 nF + 470 nF), and direct compatibility with the STEVAL-MKI109D evaluation platform for PC-based sensor characterization via MEMS Studio.

For engineers reviewing the STEVAL-MKI125V1 datasheet, STEVAL-MKI125V1 pinout, STEVAL-MKI125V1 application, or STEVAL-MKI125V1 equivalent, this board enables rapid prototyping of motion-sensing systems using ST's MEMS gyroscopes without custom PCB design or level-shifting circuitry.

Technical Context

The STEVAL-MKI125V1 implements a passive signal-translation interface between the A3G4250D's 24-pin LGA package and a standard DIL24 socket, preserving all I²C/SPI/INT/DRDY/PLLFILT functions. It includes dedicated VDD filtering (10 µF tantalum + 100 nF ceramic + 470 nF ceramic) and configurable pull-up resistors (10 kΩ) on SCL/SDA lines.

Designed as a plug-in daughterboard for the STEVAL-MKI109D host, it relies on the motherboard's 32-bit microcontroller to handle sensor register access, data streaming, and GUI communication - no onboard firmware or processing capability is present.

Key Specifications

Parameter	Value and Actual Design Meaning
Form Factor	DIL24 socket adapter board - enables direct insertion into standard 24-pin dual-in-line test sockets.
Supported Sensor	A3G4250D 3-axis digital gyroscope - provides full pin mapping including PLLFILT, DRDY/INT2, CS, SDO/SA0, SDA/SDI/SDO, SCL/SPC.
Power Decoupling	VDD line features 10 µF tantalum + 100 nF ceramic + 470 nF ceramic - ensures stable supply for high-frequency gyroscope operation.
Interface Support	I²C and SPI modes - selectable via SA0/CS pin configuration; compatible with STEVAL-MKI109D's dual-mode bridge controller.
RoHS Compliance	Fully RoHS-compliant construction - meets EU Directive 2011/65/EU for hazardous substance restrictions.

Availability

STEVAL-MKI125V1 is available at Aetrix Electronics and suitable for MEMS sensor evaluation, industrial motion prototyping, and academic inertial measurement labs requiring stable component supply and traceable sourcing.

Supply support for STEVAL-MKI125V1 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, specializing in microcontrollers, sensors, power management, and automotive ICs.

This board belongs to ST's professional MEMS evaluation tool family, engineered to accelerate development of motion-sensing applications by removing hardware integration barriers for their digital gyroscopes and accelerometers.

FAQ

Does STEVAL-MKI125V1 include firmware or operate standalone?

No. The board contains no microcontroller or firmware. It is a passive adapter that routes A3G4250D signals to the STEVAL-MKI109D host platform, which handles communication, data acquisition, and MEMS Studio interface.

What voltage levels does STEVAL-MKI125V1 support for VDD and VDD_IO?

The board supports 2.2–3.6 V on VDD (A3G4250D core supply) and 1.71–3.6 V on VDD_IO (I/O supply), matching the A3G4250D's specified operating ranges. No level-shifting circuitry is integrated.

Can STEVAL-MKI125V1 be used without the STEVAL-MKI109D platform?

It can be used with other hosts if external control logic replicates the required I²C/SPI timing, interrupt handling, and register map access - but no reference schematics or driver support are provided by ST for non-MKI109D use.

Are the jumpers JP1 and JP2 factory-configured for default operation?

Yes. JP1 and JP2 are pre-soldered to configure SCL/SDA pull-ups (10 kΩ) and enable DRDY/INT2 routing. No user modification is needed for basic MEMS Studio operation with STEVAL-MKI109D.

STEVAL-MKI125V1 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Packaging:: Bulk

Product Status:: Active

Platform:: Professional MEMS Tool

Type:: Sensor

Function:: Gyroscope

Utilized IC / Part:: A3G4250D

Contents:: Board(s)

STEVAL-MKI125V1 FAQ

1.How can I place an order for STEVAL-MKI125V1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STEVAL-MKI125V1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STEVAL-MKI125V1 reliable?

The price and inventory of STEVAL-MKI125V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-MKI125V1 is usually 5 days.

3.What payment methods are accepted for STEVAL-MKI125V1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-MKI125V1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STEVAL-MKI125V1?

STEVAL-MKI125V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STEVAL-MKI125V1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STEVAL-MKI125V1?

For technical support, including STEVAL-MKI125V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-MKI125V1 requirements.

6.How does Aetrix verify that STEVAL-MKI125V1 is sourced from the original manufacturer or authorized distributors?

All STEVAL-MKI125V1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STEVAL-MKI125V1 meets industry standards.

7.What is the process for return or replacement of STEVAL-MKI125V1?

All STEVAL-MKI125V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-MKI125V1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STEVAL-MKI125V1 part is unused and in its original packaging.

Return procedure for STEVAL-MKI125V1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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