lis3l02as STMicroelectronics, lis3l02as Datasheet

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lis3l02as

Manufacturer Part Number
lis3l02as
Description
Inertial Sensor 3axis - 2g/6g Linear Accelerometer
Manufacturer
STMicroelectronics
Datasheet

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DESCRIPTION
The LIS3L02AS is a tri-axis linear accelerometer
that includes a sensing element and an IC inter-
face able to take the information from the sensing
element and to provide an analog signal to the ex-
ternal 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 trimmed to
better match the sensing element characteristics.
The LIS3L02AS has a user selectable full scale of
BLOCK DIAGRAM
February 2003
This is preliminary information on a new product now in development. Details are subject to change without notice.
3V TO 5.25V SINGLE SUPPLY OPERATION
THE SENSITIVITY IS ADJUSTED WITH A
TOTAL ACCURACY OF ±10%
THE OUTPUT VOLTAGE, OFFSET,
SENSITIVITY AND TEST VOLTAGE ARE
RATIOMETRIC TO THE SUPPLY VOLTAGE
DEVICE SENSITIVITY IS ON-CHIP FACTORY
TRIMMED
EMBEDDED SELF TEST
HIGH SHOCK SURVIVABILITY
rot
VOLTAGE & CURRENT
REFERENCE
S1X
S1Y
S1Z
S2X
S2Y
S2Z
MUX
3Axis - 2g/6g LINEAR ACCELEROMETER
TRIMMING CIRCUIT
TEST INTERFACE
&
AMPLIFIER
CHARGE
2g, 6g and it is capable of measuring accelerations
over a maximum bandwidth of 4.0 KHz for the X
and Y axis and 2.5KHz for the Z axis. The device
pacitances. A self-test capability allows the user to
check the functioning of the system.
The LIS3L02AS is available in plastic SMD pack-
bandwidth may be reduced by using external ca-
age and it is specified over a temperature range
extending from -40° C to +85° C.
The LIS3L02AS belongs to a family of products
suitable for a variety of applications:
– Antitheft systems
– Inertial navigation
– Virtual reality input devices
– Vibration Monitoring, recording and compen-
– Appliance control
– Robotics
sation
DEMUX
PHASE GENERATOR
ORDERING NUMBER: LIS3L02AS
CLOCK
&
INERTIAL SENSOR:
S/H
S/H
S/H
SO-24
LIS3L02AS
PRODUCT PREVIEW
Routy
Routz
Routx
Vouty
Voutz
Voutx
1/7

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lis3l02as Summary of contents

Page 1

... 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 trimmed to better match the sensing element characteristics. The LIS3L02AS has a user selectable full scale of BLOCK DIAGRAM S1X S1Y S1Z rot ...

Page 2

... LIS3L02AS PIN DESCRIPTION N° Pin Internally not connected 7 Reserved Leave unconnected or connect to ground 8 Reserved Leave unconnected or connect to Vdd 9 Reserved Connect to Vdd or ground 10-11 Reserved Leave unconnected or connect to Vdd 12 FS Full Scale selection (Logic 0: 2g Full-scale; Logic 1: 6g Full-scale) 13 Voutz Output Voltage ...

Page 3

... T = 25°C Vdd/15–10% Full-scale = 6g Best fit straight line X, Y axis Full-scale = 2g Best fit straight line Z axis Full-scale = axis Z axis Vdd=5V Full-scale = 25° Logic 0 level 0 Logic 1 level 2.8 320 LIS3L02AS Typ. Max. Unit 5.25 V 1.0 mA Vdd/2 Vdd/2+10% V 2.0 2.2 g ± 6.0 g Vdd/5 Vdd/5+10% V/g Vdd/15 ...

Page 4

... LIS3L02AS Figure 1. Equivalent electrical circuit 1.2 IC Interface The complete signal processing uses a fully differential structure, while the final stage converts the differ- ential signal into a single-ended one to be compatible with the external world. The first stage is a low-noise capacitive amplifier that implements a Correlated Double Sampling (CDS) at its output to cancel the offset and the 1/f noise. The produced signal is then sent to three different S& ...

Page 5

... The trimming values are stored inside the device by a poly-fuse structure. Any time the device is turned on, the memorized bits are downloaded into the registers to be employed during the normal operation. The poly-fuse approach allows the final user to utilize the device without any need for further calibration LIS3L02AS 5/7 ...

Page 6

... LIS3L02AS mm DIM. MIN. TYP. MAX. MIN. A 2.35 2.65 0.093 A1 0.10 0.30 0.004 A2 2.55 B 0.33 0.51 0.013 C 0.23 0.32 0.009 D 15.20 15.60 0.598 E 7.40 7.60 0.291 e 1.27 H 10.0 10.65 0.394 h 0.25 0.75 0.010 k 0˚ (min.), 8˚ (max.) L 0.40 1.27 0.016 B 0.10mm .004 Seating Plane 6/7 inch OUTLINE AND MECHANICAL DATA TYP. MAX. 0.104 0.012 0.100 0.0200 0.013 0.614 0.299 0,050 0 ...

Page 7

... The ST logo is a registered trademark of STMicroelectronics Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. 2003 STMicroelectronics - All Rights Reserved  STMicroelectronics GROUP OF COMPANIES http://www.st.com LIS3L02AS 7/7 ...

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