LIS3L06AL
MEMS INERTIAL SENSOR:
3-axis - +/-2g/6g ultracompact linear accelerometer
Features
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■
■
■
■
■
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2.4V to 3.6V single supply operation
Low power consumption
±
2g/
±
6g user selectable full-scale
0.5mg resolution over 100hz bandwidth
Embedded self test
Output voltage, offset and sensitivity
ratiometric to the supply voltage
High shock survivability
ECOPACK® Lead-free compliant
(see
Section 6)
LGA-8
to design a dedicated circuit which is trimmed to
better match the sensing element characteristics.
The LIS3L06AL has a dynamically selectable full
scale of
±
2g/
±
6g and it is capable of measuring
accelerations over a bandwidth of 1.5 kHz for all
axes. The device bandwidth may be reduced by
using external capacitances. A self-test capability
allows to check the mechanical and electrical
signal path of the sensor.
The LIS3L06AL is available in plastic SMD
package and it is guaranteed to operate over an
extended temperature range of -40°C to +85°C.
The LIS3L06AL belongs to a family of products
suitable for a variety of applications:
– Mobile terminals
– Gaming and Virtual Reality input devices
– Free-fall detection for data protection
– Antitheft systems and Inertial Navigation
– Appliance and Robotics.
Description
The LIS3L06AL is a low-power 3-axis linear
capacitive accelerometer that includes a sensing
element and an IC interface able to take the
information from the sensing element and to
provide an analog signal to the external world.
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 is manufactured using a standard
CMOS process that allows high level of integration
Order codes
Part number
LIS3L06AL
LIS3L06ALTR
Temp range,
°C
-40°C to +85°C
-40°C to +85°C
Package
LGA-8
LGA-8
Packing
Tray
Tape & Reel
May 2006
Rev 2
1/17
www.st.com
17
Contents
LIS3L06AL
Contents
1
Block Diagram & Pins Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
1.2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Mechanical and Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1
2.2
2.3
2.4
Mechanical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3
Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1
3.2
3.3
Sensing element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
IC Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4
Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1
4.2
Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Output Response vs Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5
Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1
5.2
5.3
Mechanical Characteristics at 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mechanical Characteristics derived from measurement in the
-40°C to +85°C temperature range
13
Electrical characteristics at 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6
7
Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2/17
LIS3L06AL
Block Diagram & Pins Description
1
1.1
Block Diagram & Pins Description
Block diagram
Figure 1.
Block Diagram
X+
Y+
Z+
CHARGE
AMPLIFIER
S/H
Routx Voutx
a
Z-
Y-
X-
MUX
DEMUX
Routy Vouty
S/H
Routz Voutz
S/H
SELF TEST
REFERENCE
TRIMMING CIRCUIT
CLOCK
1.2
Pin Description
Figure 2.
Pin Connection
LIS3L06AL
Z
X
1
Voutx
Vouty
Vdd
ST
Voutz
GND
Y
FS
DIRECTION OF THE
DETECTABLE
ACCELERATIONS
Reserved
BOTTOM VIEW
3/17
Block Diagram & Pins Description
Table 1.
Pin #
1
2
3
4
5
6
7
8
LIS3L06AL
Pin description
Pin Name
ST
Voutz
GND
Reserved
FS
Vouty
Voutx
Vdd
Function
Self Test (Logic 0: normal mode; Logic 1: Self-test)
Output Voltage Z channel
0V supply
Leave unconnected
Full Scale (Logic 0:2g Full scale; Logic1: 6g Full Scale)
Output Voltage Y channel
Output Voltage X channel
Power supply
4/17
LIS3L06AL
Mechanical and Electrical Specifications
2
2.1
Table 2.
Mechanical and Electrical Specifications
Mechanical Characteristics.
Mechanical Characteristics
(1)
(Temperature range -40°C to +85°C) All the parameters are specified @ Vdd =3.3V,
T = 25°C unless otherwise noted
Parameter
Acceleration Range
(3)
Test Condition
Full-scale = 2g
Full-scale = 6g
So
Sensitivity
(4)
Sensitivity Change Vs
Temperature
Zero-g Level
(4)
Zero-g level Change Vs
Temperature
Full-scale = 2g
Full-scale = 6g
SoDr
Voff
OffDr
Delta from +25°C
T = 25°C
Delta from +25°C
Best fit straight line
Full-scale = 2g
X, Y axis
Best fit straight line
Full-scale = 2g
Z axis
Vdd/2-6%
Min.
±1.8
±5.4
Vdd/5–10%
Vdd/15–10%
Typ.
(2)
±2.0
±6.0
Vdd/5
Vdd/15
±0.01
Vdd/2
±0.5
Vdd/2+6%
Vdd/5+10%
Vdd/15+10%
Max.
Unit
g
g
V/g
V/g
%/°C
V
mg/°C
Symbol
Ar
±0.3
±1.5
%
NL
Non Linearity
(5)
±0.5
±2
±1.5
±4
%
%
µg/
Hz
CrossAx Cross-Axis
(6)
An
Acceleration Noise
Density
Vdd=3.3V;
Full-scale = 2g
T = 25°C
Vdd=3.3V
Full-scale = 2g
X axis
T = 25°C
Vdd=3.3V
Full-scale = 2g
Y axis
T = 25°C
Vdd=3.3V
Full-scale = 2g
Z axis
Fres
Sensing Element
Resonance
Frequency
(10)
all axes
50
-20
-50
-100
mV
Vt
Self test Output Voltage
Change
(7),(8),(9)
20
50
100
mV
20
50
100
mV
1.5
kHz
5/17
