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參數(shù)資料
| 型號(hào)： | LIS2L01 |
| 元件分類： | 加速度傳感器 |
| 英文描述： | INERTIAL SENSOR: 2AXIS/1G LINEAR ACCELEROMETER |
| 中文描述： | 慣性傳感器：2AXIS/1G線性加速度計(jì) |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 62K |
| 代理商： | LIS2L01 |
3/6
LIS2L01
ELECTRICAL CHARACTERISTCS
(Temperature range 0°C to 80°C, supply voltage Vdd = 5V ±5%.)
1
FUNCTIONALITY
1.1 Sensor element
The ThELMA process is utilized to create a surface micro-machined accelerometer. The technology allows car-
ry out silicon structure on suspension, the structure are attached to the substrate in few points called anchor
and free to move on a plane parallel to the substrate itself. To be compatible with the traditional packaging tech-
niques a cap is placed on top the sensor element to avoid the molding goes between the elements making the
sensor useless.
The equivalent circuit for the sensor is shown in the below figure; when a linear acceleration is applied, the proof
mass displaces from its nominal position, causing an imbalance in the capacitive half-bridge. This imbalance is
measured using charge integration in response to a voltage pulse applied to the sense capacitor.
The nominal value of the capacitors, at steady state, is few pF and when an acceleration is applied the maximum
variation of the capacitive load is few tenth of pF.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Vdd
Supply voltage
4.75
5
5.25
V
Idd
Supply current
10
mA
Voff
Zero-g level
T = 25°C
ratiometric to Vdd
Vdd/2
– 0.1
Vdd/2
Vdd/2
+ 0.1
V
Ar
Acceleration range
TBD
±
1
TBD
g
So
Sensitivity ratiometric to Vdd
Vdd = 5V
T = 25°C
1.8
2
2.2
V/g
fuc
Upper cutoff frequency low pass
filter
-3dB/2
nd
order filter
27
30
33
Hz
an
Equivalent noise acceleration
Bandwidth = 0.1…30Hz
1
mg
Vt
Self test output voltage
Ratiometric to Vdd
T = 25°C
@ 5V
TBD
V
Vst
Self test input
Logic 1 voltage
Logic 0 voltage
3.75
Vss
Vdd
1.25
V
V
Cload
Capacitive load drive
100
pF
Rload
Resistive load output
50
k
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