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STEVAL-MKI109V2 Datenblatt(PDF) 2 Page - STMicroelectronics

Teilenummer STEVAL-MKI109V2
Bauteilbeschribung  high-resolution MEMS pressure sensor
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STEVAL-MKI109V2 Datenblatt(HTML) 2 Page - STMicroelectronics

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absolute digital
output barometer
The LPS331AP is an ultra-compact absolute
piezoresistive pressure sensor. It includes
a monolithic sensing element and an IC
interface able to take the information from
the sensing element and to provide a digital
signal to the external world.
The sensing element consists of a
suspended membrane inside a single mono-
silicon substrate. It is capable of detecting
pressure and is manufactured using a
specific proprietary process called VENSENS.
The VENSENS process allows a mono-
silicon membrane to be produced above
an air cavity with controlled gap and
defined pressure. The membrane is very
small compared to traditional silicon
micromachined membranes. Membrane
breakage is prevented by intrinsic
mechanical stoppers.
The IC interface is manufactured using a
standard CMOS process. This allows a high
level of integration to design a dedicated
circuit which is trimmed to better match the
sensing element characteristics.
The LPS331AP is available in a small plastic
land grid array (HCLGA) package and is
guaranteed to operate over an extended
temperature range from -40 to +85 °C. The
package is holed to allow external pressure
to reach the sensing element.
evaluation Kit
ST’s pressure sensors are supported by an
evaluation kit that consists of a motherboard
(STEVAL-MKI109V2) and a plug-in module
that includes the LPS331AP sensor (STEVAL-
MKI120V1). Once the adapter is plugged in,
the board can be connected to a host PC
via USB so the device’s capabilities can be
easily evaluated via an intuitive graphic user
interface. For further information go to
www.st.com/mems.
lps331ap blocK diagram
© STMicroelectronics - September 2012 - Printed in United Kingdom - All rights reserved
The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies
All other names are the property of their respective owners
For more information on ST products and solutions, visit www.st.com
Order code: FLLPS331AP0912
device summary
order codes
temperature range (°c)
package
packing
lps331apy
-40 to +85
HCLGA-16L
Tray
lps331aptr
Tape and reel
evaluation boards
description
steval-mKi109v2
Motherboard based on STM32. It features a DIL24 socket where every ST's MEMS adapter can be plugged in
steval-mKi120v1
Adapter board that enables fast system prototyping and LPS331AP evaluation
Note: *software provided together with the companion chip
Test points
STEVAL-MKI109V2
STM32
microcontroller
USB connector
LPS331AP
JTAG/SWD
STEVAL-MKI120V1
adapter
MUX
p
Voltage and
current bias
Clock and
timing
Sensor bias
Low noise
analog
front end
ADC
+
digital filter
DSP for
temperature
compensation
CS
SCL/SPC
SDA/SDO/SDI
SAO/SDO
I²C
SPI
Sensing
element
Rs
Rs
Rs
Vout
Vup
Vdown
Rs
Temperature
sensor


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