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PDF LIS332AR Data sheet ( Hoja de datos )
| Número de pieza | LIS332AR | |
| Descripción | MEMS motion sensor | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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LIS332AR
MEMS motion sensor:
3-axis ±2 g analog-output ultracompact accelerometer
Features
■ Single voltage supply operation
■ ±2 g full-scale
■ High stability over temperature
■ Ratiometric output voltage
■ Power-down mode
■ Embedded self-test
■ 10000 g high shock survivability
■ ECOPACK® RoHS and “Green” compliant
(see Section 7)
Applications
■ Tilting applications
■ Free-fall detection
■ Gaming
■ Anti-theft systems
■ Inertial navigation and motion tracking
Description
The LIS332AR is a miniaturized low-power 3-axis
linear accelerometer belonging to the “nano”
family of ST motion sensors. It includes a sensing
element and an IC interface 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 motion
sensors and actuators in silicon.
The IC interface is manufactured using a CMOS
process that allows the design of a dedicated
Table 1. Device summary
Order code
Temperature range [°C]
LIS332AR
LIS332ARTR
-40 to +85
-40 to +85
LGA-16 (3x3x1.0mm)
circuit which is trimmed to better match the
sensing element characteristics.
The LIS332AR has a full-scale of ±2 g, and is
capable of measuring accelerations over a
maximum bandwidth of 2.0 kHz. The device
bandwidth may be reduced by using external
capacitors. The self-test capability allows the user
to check the functioning of the sensor in the final
application.
ST is already in the field with several hundred
million sensors which have received excellent
acceptance from the market in terms of quality,
reliability and performance.
The LIS332AR is provided in a plastic land grid
array (LGA) package.
Several years ago ST successfully pioneered the
use of this package for accelerometers. Today, ST
has the widest manufacturing capability and
strongest expertise in the world for production of
sensors in plastic LGA packages.
Package
LGA-16
LGA-16
Packing
Tray
Tape and reel
February 2010
Doc ID 16931 Rev 1
1/14
www.st.com
14
1 page  
LIS332AR
Mechanical and electrical specifications
2 Mechanical and electrical specifications
2.1 Mechanical characteristics
@ Vdd=3 V, T=25 °C unless otherwise noted(a).
Table 3. Mechanical characteristics
Symbol
Parameter
Test condition
Ar Acceleration range(2)
Min.
Typ.(1)
±2
Max.
So Sensitivity(3)
SoDr
Sensitivity change vs.
temperature
Voff Zero-g level(4)
OffDr
Zero-g level change
vs. temperature
NL Non linearity(4)
CrossAx Cross-axis(5)
Delta from +25 °C
T=25 °C
Delta from +25 °C
Best fit straight line
An
Acceleration noise
density
Vdd=3 V
T=25 °C
Vdd=3 V
X axis
T=25 °C
Vt
Self-test output
voltage change(6),(7)
Vdd=3 V
Y axis
T=25 °C
Vdd=3 V
Z axis
Fres
Sensing element
resonant frequency(8)
All axes
Top
Operating
temperature range
Wh Product weight
0.2*Vdd
–5%
Vdd/2-6%
0.2*Vdd
±0.01
Vdd/2
±0.2
±0.5
±2
100
0.2*Vdd
+ 5%
Vdd/2+6%
60 700
60 700
60 700
2.0
-40 +85
30
1. Typical specifications are not guaranteed
2. Guaranteed by wafer level test and measurement of initial offset and sensitivity
3. Zero-g level and sensitivity are ratiometric to supply voltage
4. Guaranteed by design
5. Contribution to the measured output of an inclination/acceleration along any perpendicular axis
6. “Self-test output voltage change” is defined as Vout(Vst=logic 1)-Vout(Vst=logic 0)
7. “Self-test output voltage change” varies cubically with supply voltage
8. Minimum resonance frequency FRES=2.0 kHz. Sensor bandwidth=1/(2*π*32kΩ*CLOAD), with CLOAD>2.5 nF
Unit
g
V/g
%/°C
V
mg/°C
% FS
%
µg/ Hz
mV
mV
mV
kHz
°C
mgram
a. The product is factory calibrated at 3 V. The operational power supply range is specified in Table 4. Since the
device is ratiometric, Voff, So and Vt parameters vary with supply voltage.
Doc ID 16931 Rev 1
5/14
5 Page 
LIS332AR
Application hints
6.1
6.2
Table 6.
Filter capacitor selection, CLOAD (x,y,z)
Cut-off frequency
1 Hz
10 Hz
20 Hz
50 Hz
100 Hz
200 Hz
500 Hz
Capacitor value
5 µF
0.5 µF
250 nF
100 nF
50 nF
25 nF
10 nF
Soldering information
The LGA package is compliant with the ECOPACK®, RoHs and “Green” standard.
It is qualified for soldering heat resistance according to JEDEC J-STD-020C.
Leave “pin 1 Indicator” unconnected during soldering.
Land pattern and soldering recommendations are available at www.st.com
Output response vs. orientation
Figure 4.
Output response vs. orientation
X=1.5V (0g)
Y=2.1V (+1g)
Z=1.5V (0g)
X=2.1V (+1g)
Y=1.5V (0g)
Z=1.5V (0g)
TOP VIEW
X=1.5V (0g)
Y=0.9V (-1g)
Z=1.5V (0g)
X=0.9V (-1g)
Y=1.5V (0g)
Z=1.5V (0g)
Bottom
X=1.5V (0g)
Y=1.5V (0g)
Top Z=2.1V (+1g)
Top
X=1.5V (0g)
Y=1.5V (0g)
Bottom Z=0.9V (-1g)
Earth’s Surface
Figure 4 refers to the LIS332AR powered at 3 V.
Doc ID 16931 Rev 1
11/14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet LIS332AR.PDF ] | |
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