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LIS3L02DQ

January 2005

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

1

FEATURES

AND OFFSET

2

DESCRIPTION

The LIS3L02DQ is a tri-axis 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 mea-

sured acceleration signals to the external world

The sensing element, capable to detect the accel-

eration, is manufactured using a dedicated pro-

cess called THELMA (Thick Epi-Poly Layer for

Microactuators and Accelerometers) 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 char-

acteristics.

The LIS3L02DQ is capable of measuring acceler-

ations over a maximum bandwidth of 2.0 KHz for

the X, Y axis and Z axis. The device bandwidth

may be selected accordingly to the application re-

quirements. A self-test capability allows the user to

check the functioning of the system.

The device may be configured to generate an iner-

tial wake-up/interrupt signal when a programma-

ble acceleration threshold is exceeded along one

of the three axis.

The LIS3L02DQ is available in plastic SMD pack-

age and it is specified over a temperature range

extending from -20°C to +70°C.

The LIS3L02DQ belongs to a family of products

suitable for a variety of applications:

– Motion activated functions in mobile terminals

– Antitheft systems and Inertial navigation

– Gaming and Virtual Reality input devices

– Vibration Monitoring and Compensation

PRELIMINARY DATA

INERTIAL SENSOR:

3Axis - 2g DIGITAL OUTPUT LINEAR ACCELEROMETER

Figure 2. Block Diagram

Σ∆

CHARGE

AMPLIFIER

MUX

S1Y

S1Z

S2Y

S2Z

Regs

VOLTAGE & CURRENT

REFERENCE

TRIMMING CIRCUIT

&

CLOCK

&

PHASE GENERATOR

TEST INTERFACE

rot

S1X

S2X

DE

MUX

Reconstruction

Filter

Σ∆

Σ∆

Array

I2C

SPI

CS

SCL/SPC

SDA/SDIO

SDO

CONTROL LOGIC

&

INTERRUPT GEN.

RDY/INT

Reconstruction

Filter

Reconstruction

Filter

Figure 1. Package

Table 1. Order Codes

Part Number

Package

LIS3L02DQ

QFN-44

QFN-44

Rev. 3