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PDF LIS302ALK Data sheet ( Hoja de datos )
| Número de pieza | LIS302ALK | |
| Descripción | MEMS motion sensor | |
| Fabricantes | ST Microelectronics | |
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LIS302ALK
MEMS motion sensor
3-axis - ±2g analog output "piccolo" accelerometer
Preliminary Data
Features
■ 3.0V to 3.6V supply voltage
■ ~2mW power consumption
■ ±2g full-scale
■ 3 axes acceleration channels
■ Ratiometric output voltage
■ Embedded self test
■ Power down mode
■ 10000g high shock survivability
■ ECOPACK® RoHS and “Green” compliant
(see Section 5)
Description
The LIS302ALK is a miniaturized low-power
three-axis linear accelerometer. 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 to design a dedicated circuit
which is trimmed to better match the sensing
element characteristics. The device can be
operated from 2.16V to 3.6V.
LGA-14 (3x5x0.9mm)
The LIS302ALK has a full scale of ±2g and it is
capable of measuring accelerations over a
maximum bandwidth of 2.0kHz. The device
bandwidth may be reduced by using external
capacitances.
A self-test capability allows the user to check the
functioning of the sensor in the final application
without thew need to move or tilt the sensor.
The LIS302ALK is available in plastic Thin Land
Grid Array package (TLGA) and it is guaranteed
to operate over an extended temperature range
from -40°C to +85°C.
The LIS302ALK 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.
Order codes
Part number
LIS302ALK
LIS302ALKTR
Temperature range, °C
-40°C to +85°C
-40°C to +85°C
Package
LGA-14
LGA-14
Note:
Tape & reel parts are compliant to International Standard EIA-481.
Packing
Tray
Tape & reel
October 2006
Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
1/14
www.st.com
14
1 page  
LIS302ALK
Mechanical and electrical specifications
2 Mechanical and electrical specifications
2.1 Mechanical characteristics.
Table 2.
Mechanical characteristics(1)
All parameters are specified @ Vdd =3.3V, T = 25°C unless otherwise noted
Symbol
Parameter
Test Condition
Min.
Typ.(2)
Max.
Ar Acceleration range(3)
So Sensitivity(4)
0.415
±2.0
0.440
0.465
SoDr
Voff
Sensitivity change Vs
Temperature
Zero-g level(4)
Delta from +25°C
T = 25°C
Vdd/2-6%
±0.01
Vdd/2
Vdd/2+6%
OffDr
Zero-g level change
Vs Temperature
NL Non Linearity(5)
CrossAx Cross-Axis(6)
Delta from +25°C
Best fit straight line
±0.5
±0.5
±2
An
Acceleration Noise
Density
Vdd=3.3V
200
T = 25°C
Vdd=3.3V
X axis
+80
+220
T = 25°C
Vt
Self test output
voltage change(7),(8)
Vdd=3.3V
Y axis
+80
+220
Unit
g
V/g
%/°C
V
mg/°C
% FS
%
µg/ Hz
mV
mV
T = 25°C
Vdd=3.3V
Z axis
+80
+220
mV
Sensing Element
Fres Resonant
Frequency(9)
all axes
Top
Operating
Temperature Range
Wh Product Weight
2.0 kHz
-40 +85 °C
30 mgram
1. The product is factory calibrated at 3.3V. The operational power supply range is specified in table 3. Since the device is
ratiometric Voff, So and Vt parameters will vary with supply voltage.
2. Typical specifications are not guaranteed
3. Guaranteed by wafer level test and measurement of initial offset and sensitivity
4. Zero-g level and sensitivity are ratiometric to supply voltage
5. Guaranteed by design
6. Contribution to the measuring output of an inclination/acceleration along any perpendicular axis
7. “Self test output voltage change” is defined as Vout(Vst=Logic1)-Vout(Vst=Logic0)
8. “Self test output voltage change” varies cubically with supply voltage
9. Minimum resonance frequency Fres=2.0kHz. Sensor bandwidth=1/(2*π*32kΩ*Cload)
5/14
5 Page 
LIS302ALK
Table 5.
Filter capacitor selection, Cload (x,y,z)
Cut-off frequency
1 Hz
10 Hz
20 Hz
50 Hz
100 Hz
200 Hz
500 Hz
Application hints
Capacitor value
5 μF
0.5μF
250nF
100nF
50nF
25nF
10nF
4.1
4.2
Note:
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.
Pin1 indicator is electrically connected to pin 1. Leave pin 1 indicator unconnected during
soldering. Land pattern and soldering recommendations are available at www.st.com/mems.
Output response vs. orientation
Figure 4.
Output Response vs. Orientation
X=1.17V (-1g)
Y=1.65V (0g)
Z=1.65V (0g)
X=1.65V (0g)
Y=2.13V (+1g)
Z=1.65V (0g)
TOP VIEW
X=1.65V (0g)
Y=1.17V (-1g)
Z=1.65V (0g)
Bottom
X=1.65V (0g)
Y=1.65V (0g)
Top Z=1.17V (-1g)
Top
X=1.65V (0g)
Y=1.65V (0g)
Bottom Z=2.13V (+1g)
X=2.13V (+1g)
Y=1.65V (0g)
Z=1.65V (0g)
Earth’s Surface
Figure 4 refers to LIS302ALK powered at 3.3V.
11/14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet LIS302ALK.PDF ] | |
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