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Teilenummer | LIS352AR |
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Beschreibung | MEMS motion sensor | |
Hersteller | STMicroelectronics | |
Logo | ||
Gesamt 15 Seiten LIS352AR
MEMS motion sensor:
3-axis ±2 g analog-output "piccolo" accelerometer
Features
■ Single voltage supply operation
■ ±2 g full-scale
■ 3 acceleration channels plus multiplexed
analog output
■ Ratiometric output voltage
■ Power-down mode
■ Embedded self-test
■ 10000 g high shock survivability
■ ECOPACK® RoHS and “Green” compliant
(see Section 7)
Applications
■ Free-fall detection for data protection
■ Tilting applications
■ Gaming and virtual reality input devices
■ Antitheft systems and inertial navigation
Description
The LIS352AR is a miniaturized low-power 3-axis
linear accelerometer belonging to the “piccolo”
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
circuit which is trimmed to better match the
sensing element characteristics.
The LIS352AR 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
LGA-14 (3x5x0.9mm)
capacitors. The self-test capability allows the user
to check the functioning of the sensor in the final
application.
The device has three analog acceleration outputs,
plus an embedded multiplexer that allows for
redirection of the analog outputs onto a single pin
for operation with a single-channel A/D converter.
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 LIS352AR is provided in a plastic land grid
array (LGA) package.
Several years ago ST successfully pioneered the
usage 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.
Table 1. Device summary
Order code
Temp.
range [°C]
Package
Packing
LIS352AR -40 to +85 LGA-14
Tray
LIS352ARTR -40 to +85 LGA-14 Tape and reel
February 2010
Doc ID 16933 Rev 1
1/15
www.st.com
15
Free Datasheet http://www.datasheet4u.com/
Mechanical and electrical specifications
LIS352AR
5. Contribution to the measuring 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
2.2 Electrical characteristics
@ Vdd=3.3 V, T=25 °C unless otherwise noted(b)
Table 4. Electrical characteristics
Symbol
Parameter
Test condition
Min.
Typ.(1)
Max.
Vdd Supply voltage
Idd Supply current
Mean value
PD pin connected to GND
IddPdn
Supply current in
power-down mode
PD pin connected to Vdd
Vst Self-test input
Logic 0 level at Vdd=3.3 V
Vpd Power-down input Logic 1 level at Vdd=3.3 V
Vs0 S0 Input
Logic 0 level at Vdd=3.3 V
Logic 1 level at Vdd=3.3 V
Vs1 S1 input
Logic 0 level at Vdd=3.3 V
Logic 1 level at Vdd=3.3 V
Rout
Output impedance of
Voutx, Vouty, Voutz
Cload
Capacitive load drive
for Voutx, Vouty,
Voutz(2)
Rmux
Series resistance of
multiplexer input vs.
Vout
Capacitive load drive
Cloadmux for multiplexed output
Vout
Turn-on time at exit
Ton from power-down
mode
CLOAD in µF
Top
Operating
temperature range
2.16 3.3
0.3
3.6
1
0
0.8*Vdd
0
0.8*Vdd
0
0.8*Vdd
0.2*Vdd
Vdd
0.2*Vdd
Vdd
0.2*Vdd
Vdd
32
2.5
1
10
160*CLOAD+0.3
-40 +85
1. Typical specifications are not guaranteed
2. Minimum resonance frequency FRES=2.0 kHz. Device bandwidth=1/(2*π*32kΩ*CLOAD), with CLOAD>2.5 nF
Unit
V
mA
µA
V
V
V
kΩ
nF
kΩ
pF
ms
°C
b. The product is factory calibrated at 3.3 V.
6/15 Doc ID 16933 Rev 1
6 Page Application hints
LIS352AR
6.2
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)
X=2.13V (+1g)
Y=1.65V (0g)
Z=1.65V (0g)
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)
Earth’ surface
Figure 4 refers to the LIS352AR powered at 3.3 V.
12/15
Doc ID 16933 Rev 1
12 Page | ||
Seiten | Gesamt 15 Seiten | |
PDF Download | [ LIS352AR Schematic.PDF ] |
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