LPS25H: Low noise pressure sensor from STMicroelectronics

WilliamSouplet — Tue, 19 Nov 2013 15:52:45 GMT

Current Revision posted to Documents by WilliamSouplet on 11/19/2013 3:52:45 PM

ST’s LPS25H new pressure sensor measures wide pressure range from 260 to 1260 mbar which is equivalent to 10 000 meters max (above the Everest Mountain) and 1800 meters below the sea level when device is used as barometer.

Its high accuracy allows the user to detect an altitude change in centimeter and therefore enhance indoor/outdoor navigation.

Calibrated at 3 temperatures and 2 pressures for better sensitivity and accuracy, LPS25H doesn’t require any external compensation software to correct measurement errors and keeps power consumption extremely low with different configuration possibilities. It consumes only 25 µA max in High resolution mode and is housed in a very small package (2.5 x 2.5 m²)

Tools available: Daughter board STEVAL-MKI142V1 compatible with STM32-based MEMS motherboard STEVAL-MKI109V2

Features

· Pressure range : 260 to 1260 mbar

· Low noise

0.025 mbar in High resolution mode

0.01 mbar in Low resolution mode

· Analog supply voltage: 1.7 V to 3.6 V

· Digital supply voltage IOs: 1.7 to 3.6 V

· Pressure sensitivity : 4096 LSB / mbar

· Relative accuracy over pressure :

± 0.1 mbar (800 to 1100 mbar,Typ @ T=25°C)

· Low Current consumption

25 µA in High resolution mode

4 µA in Low resolution mode

0.5 µA in Power down mode

· Selectable Output data rate : 1 to 25 Hz

· 24-bit data output

· Embedded temperature compensation & FIFO (32 samples)

· High shock survivability : 10 000 g

· SPI & I²C interfaces

· 2.5x2.5 mm LGA-10 package

Applications

· Indoor and outdoor navigation

· Altimeter and barometer for portable devices

· GPS Applications

· Sport watches

· Weather stations

Tags: barometer, pressure, lps25h, stmicroelectronics, altimeter, st, sensor, MEMS and Sensors