STEVAL-MKI223V1K
Data brief

Pressure sensor evaluation kit with Qvar functionality
based on the ILPS28QSWFeatures••••User-friendly ILPS28QSW board
Complete ILPS28QSW pinout for a standard DIL24 socket
Fully compatible with the STEVAL-MKI109V3 motherboard
RoHS compliant

Description
The STEVAL-MKI223V1K demonstration board is a kit composed of a PCB mounting
the ILPS28QSW pressure sensor with a Qvar electrostatic sensor and a swipe
electrode.
The electrode boards (STEVAL-MKE001A, STEVAL-MKE002A, or STEVALMKE003A) can be stacked on the STEVAL-MKI223V1 board. The kit provides thecomplete ILPS28QSW pinout and comes ready-to-use with the required decoupling
capacitors on the VDD power supply line.
This adapter is supported by the STEVAL-MKI109V3 motherboard, which includes ahigh-performance 32-bit microcontroller functioning as a bridge between the sensor
and a PC, on which it is possible to use the MEMS Studio downloadable graphicaluser interface or dedicated software routines for customized applications.

Product summary
Pressure sensor
evaluation kit with Qvar
functionality based onthe ILPS28QSWSTEVALMKI223V1K

Dual full-scale, 1260 hPa
and 4060 hPa, absolute
ILPS28QSW
digital output barometerwith Qvar detection in awater-resistant package
MEMS adapter
motherboard based on
the STM32F401VE

STEVALMKI109V3Applications

Gas metering

DB4981 - Rev 2 - August 2024
For further information contact your local STMicroelectronics sales office.

www.st.com

DB4981 - Rev 21

Schematic diagrams
Figure 1. STEVAL-MKE001A circuit schematic
QVAR1123123

VDD
Q1Header 3pin SMD for QVAR electrodeGND
VDD
QVAR2123123VDD
R510M

VDD
Q2Q1

R610M
Q2Header 3pin SMD for QVAR electrode
R710M

R810M

GND
GND

STEVAL-MKI223V1K

Schematic diagrams

page 2/8

DB4981 - Rev 2Figure 2. STEVAL-MKE002A circuit schematic
QVAR1123123VDD
Q1Header 3pin SMD for QVAR electrodeGND

QVAR2123VDD
123VDD
Q2VDD
R510M

Header 3pin SMD for QVAR electrodeQ1R610M
Q2

R710M

R810M

GND
GND

GND

STEVAL-MKI223V1K

Schematic diagrams

page 3/8

DB4981 - Rev 2Figure 3. STEVAL-MKE003A circuit schematic

QVAR2123VIO
Q210M

R10R0

R2Q- pin

QVAR1123VIO
Q110M

R310M

R4Q2TU1Q1

TD1Top Up

Top Down

Q+ pinSTEVAL-MKI223V1K

Schematic diagrams

page 4/8

JP1D2ESDAXLC6-1BT2

VDD

QVAR2C32.2nF

Q+ pinHeader 12X2_n

C510nF
VDD
P1123Q- pin

R1C42.2nF

7SDA

500

QVAR11U1
ILPS28QSW

5500

QVAR2PAD
SDA

GND

R2123VDD

4SCL

P26SDASCLQVAR1 V+24232221201918171615141331234567891011122DB4981 - Rev 2

Figure 4. STEVAL-MKI223V1 circuit schematic
VDD

SCL

D1
ESDAXLC6-1BT2

VDD

C2100nF

C1
2.2uF

STEVAL-MKI223V1K

Schematic diagrams

page 5/8

STEVAL-MKI223V1K
Kit versions

2Kit versions
Table 1. STEVAL-MKI223V1K versions
PCB version
STEVAL$MKI223V1KA (1)Schematic diagrams
STEVAL$MKI223V1KA schematic diagrams

Bill of materials
STEVAL$MKI223V1KA bill of materials

1. This code identifies the first version of the STEVAL-MKI223V1K evaluation kit. The kit consists of STEVAL-MKI223V1
whose version is identified by the code STEVAL$MKI223V1A, STEVAL-MKE001A whose version is identified by the code
STEVAL$MKE001AA, STEVAL-MKE002A whose version is identified by the code STEVAL$MKE002AA, and STEVALMKE003A whose version is identified by the code STEVAL$MKE003AA.

DB4981 - Rev 2

page 6/8

STEVAL-MKI223V1K

Revision history
Table 2. Document revision history

DB4981 - Rev 2DateRevision

18-May-2023

127-Aug-2024

2Changes
Initial release
Updated Description to include MEMS Studio software solution
Minor textual updates

page 7/8

STEVAL-MKI223V1K

IMPORTANT NOTICE – READ CAREFULLYSTMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST
products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST
products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgment.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design ofpurchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. For additional information about ST trademarks, refer to www.st.com/trademarks. All other product or service names
are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2024 STMicroelectronics – All rights reserved

DB4981 - Rev 2

page 8/8