AN2381 datasheet(1/47 Pages) STMICROELECTRONICS

Part #	AN2381

Description	low voltage linear accelerometer

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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June 2006

Rev 1

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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.

www.st.com

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