AN2381 Datasheet, PDF (1/47 Pages) STMicroelectronics – low voltage linear accelerometer

AN2381
Application note
LIS3LV02DL: 3-Axis - ±2g/±6g digital output
low voltage linear accelerometer
Introduction
This document is intended to give application notes for the low-voltage 3-axis digital output
linear MEMS accelerometer provided in LGA package.
The LIS3LV02DL is a three axes digital output linear accelerometer that includes a sensing
element and an IC interface able to take the information from the sensing element and to
provide the measured acceleration signals to the external world through an I²C/SPI serial
interface.
The sensing element, capable of detecting the acceleration, is manufactured using a
dedicated process developed by ST to produce inertial sensors and actuators in silicon.
The IC interface instead is manufactured using a CMOS process that allows high level of
integration to design a dedicated circuit which is factory trimmed to better match the sensing
element characteristics.
The LIS3LV02DL has a user selectable full scale of ±2g, ±6g and it is capable of measuring
acceleration over a bandwidth of 640 Hz for all axes. The device bandwidth may be selected
accordingly to the application requirements. A self-test capability allows the user to check
the functioning of the system.
The device may be configured to generate an inertial wake-up/free-fall interrupt signal when
a programmable acceleration threshold is crossed at least in one of the three axes.
The LIS3LV02DL is available in plastic SMD package and it is specified over a temperature
range extending from -40°C to +85°C.
The small size and weight of this package make it an ideal choice for handheld portable
applications such as cell phones and PDAs or any other application where size, weight and
package performance are required.
June 2006
Rev 1
1/47
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