ST Life.augmented

LPS331AP

MEMS pressure sensor, 260-1260 mbar absolute digital output barometer
  • active Active

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 realized inside a single mono-silicon substrate. It is capable to detecting pressure and is manufactured using a dedicated process developed by ST, called VENSENS.

The VENSENS process allows to build a mono-silicon membrane above an air cavity with controlled gap and defined pressure. The membrane is very small compared to the traditionally built silicon micromachined membranes. Membrane breakage is prevented by an intrinsic mechanical stopper.

The IC interface is manufactured using a standard CMOS process that 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 holed cap land grid array (HCLGA) package and it is guaranteed to operate over a temperature range extending from -40 °C to +85 °C. The package is holed to allow external pressure to reach the sensing element.

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Errata Sheet
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Datasheet

Key Features

  • 260 to 1260 mbar absolute pressure range
  • High-resolution mode: 0.020 mbar RMS
  • Low power consumption:
  • Low resolution mode: 5.5 μA
  • High resolution mode: 30 μA
  • High overpressure capability: 20x full scale
  • Embedded temperature compensation
  • Embedded 24-bit ADC
  • Selectable ODR from 1 Hz to 25 Hz
  • SPI and I2C interfaces
  • Supply voltage: 1.71 to 3.6 V
  • High shock survivability: 10,000 g
  • Small and thin package
  • ECOPACK® lead-free compliant

Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DS8615: MEMS pressure sensor: 260-1260 mbar absolute digital output barometer
7.0 442 KB

Application Notes

Description Version Size
pdf
AN4159: Hardware and software guidelines for use of the LPS331AP
3.0 647 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STEVAL-MKI109V2 eMotion: ST MEMS adapters motherboard based on STM32. Compatible with all ST MEMS adapters based on STM32F103
STEVAL-MKI120V1 LPS331AP adapter board for standard DIL24 socket
STEVAL-MKI124V1 L3GD20, LSM303DLHC and LPS331AP 10-axis module designed to be plugged into a standard DIL 24 socket

Publications and Collaterals

Flyer

Description Version Size
pdf
LPS331AP high-resolution MEMS pressure sensor
2.0.0 1,008 KB

Sample & Buy

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Part Number Marketing StatusPackagePacking TypeAutomotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
LPS331APTRActiveHCLGA 3x3Tape And Reel_-1.4Distributor reported inventory date: 2014-10-21
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA9704000
Newark Element14Order NowAMERICA39860
Farnell Element14Order NowEUROPE12541
RUTRONIKOrder NowEUROPE43841
DIGIKEYOrder NowWORLDWIDE74391
FUTUREOrder NowWORLDWIDE11871
MOUSEROrder NowWORLDWIDE70891
Ecopack2PDF
XML
LPS331APYActiveHCLGA 3x3Tray_-1.4No availability reported, please contact our Sales officeEcopack2PDF
XML

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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