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ADXL212 Datasheet(Arkusz danych) 3 Page - Analog Devices

Numer części ADXL212
Szczegółowy opis  Precision ±2 g Dual Axis, PWM Output Accelerometer
Pobierz  12 Pages
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ADXL212
Rev. 0 | Page 3 of 12
SPECIFICATIONS
TA = –40°C to +85°C, VS = 5 V, CX = CY = 0.1 μF, acceleration = 0 g, unless otherwise noted. All minimum and maximum specifications
are guaranteed. Typical specifications are not guaranteed.
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
SENSOR INPUT
Each axis
Measurement Range1
±1.5
±2
g
Nonlinearity
Best fit straight line
±0.2
% of FS
Package Alignment Error
±1
Degrees
Alignment Error
X sensor to Y sensor
±0.01
Degrees
Cross Axis Sensitivity
±2
%
SENSITIVITY (RATIOMETRIC)2
Each axis
Sensitivity at XOUT, YOUT
VS = 5 V
10
12.5
15
%/g
Sensitivity Change Due to Temperature3
VS = 5 V
±0.5
%
ZERO g BIAS LEVEL (RATIOMETRIC)
Each axis
0 g Duty Cycle at XOUT, YOUT
25
50
75
%
Initial 0 g Output Deviation from Ideal
TA = 25°C
±2
%
0 g Duty Cycle vs. Supply
1.0
4.0
%/V
0 g Offset vs. Temperature
±2
mg/°C
NOISE PERFORMANCE
Noise Density
TA = 25°C
500
1000
μg/√Hz rms
FREQUENCY RESPONSE4
3 dB Bandwidth5
500
Hz
CX, CY Range5
0.002
4.7
μF
Sensor Resonant Frequency
5.5
kHz
SELF TEST6
Duty Cycle Change
Self test (ST) pin: pulled low (0) to high (1)
10
%
DUTY CYCLE OUTPUT STAGE
fSET7
RSET = 125 kΩ
1
kHz
fSET7 Tolerance
RSET = 125 kΩ
0.7
1.3
kHz
Voltage Levels
High
I = 25 μA
VS − 0.2
V
Low
I = 25 μA
200
mV
t2 Drift vs. Temperature
±35
ppm/°C
Rise/Fall Time
200
ns
POWER SUPPLY
Operating Voltage Range
3.0
5.25
V
Specified Performance
4.75
5.25
V
Quiescent Supply Current
0.7
1.1
mA
Turn-On Time8
19
ms
TEMPERATURE RANGE
Specified Performance
−40
+85
°C
1 Guaranteed by measurement of initial offset and sensitivity.
2 Sensitivity varies with VS. At VS = 3 V, sensitivity is typically 7.5%/g.
3 Defined as the output change from ambient-to-maximum temperature or ambient-to-minimum temperature.
4 Actual frequency response is controlled by a user supplied external capacitor (CX, CY).
5 Bandwidth = 1/(2 × π × 32 kΩ × C). For CX, CY = 0.002 μF, bandwidth = 2500 Hz. For CX, CY = 4.7 μF, bandwidth = 1 Hz. Minimum/maximum values are not tested.
6 Self test response changes with VS. At VS = 3 V, self test output is typically 6%.
7 The value of fSET is defined by the following equation:
fSET
=
t2
1
8 Larger values of CX, CY increase turn-on time. Turn-on time is approximately 160 × CX or CY + 3, where CX, CY are in μF, and the resulting turn-on time is in ms.




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