LPS331AP Datasheet, PDF (1/36 Pages) STMicroelectronics – MEMS pressure sensor: 260-1260 mbar absolute digital output barometer

LPS331AP
MEMS pressure sensor: 260-1260 mbar absolute digital output
barometer
Datasheet −production data
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
Applications
■ Indoor and outdoor navigation
■ Enhanced GPS for dead-reckoning
■ Altimeter and barometer for portable devices
■ Weather station equipment
■ Sport watches
Description
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.
Table 1. Device summary
Order codes
Temperature range [°C]
LPS331APY
LPS331APTR
-40 to +85
HCLGA-16L
(3 x 3 x 1 mm)
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.
Package
HCLGA-16L
Packing
Tray
Tape and reel
March 2012
This is information on a product in full production.
Doc ID 022112 Rev 7
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