ADXL212 Просмотр технического описания (PDF) - Analog Devices
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ADXL212 Datasheet PDF : 12 Pages
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ADXL212
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
SENSOR INPUT
Measurement Range1
Nonlinearity
Package Alignment Error
Alignment Error
Cross Axis Sensitivity
SENSITIVITY (RATIOMETRIC)2
Sensitivity at XOUT, YOUT
Sensitivity Change Due to Temperature3
ZERO g BIAS LEVEL (RATIOMETRIC)
0 g Duty Cycle at XOUT, YOUT
Initial 0 g Output Deviation from Ideal
0 g Duty Cycle vs. Supply
0 g Offset vs. Temperature
NOISE PERFORMANCE
Noise Density
FREQUENCY RESPONSE4
3 dB Bandwidth5
CX, CY Range5
Sensor Resonant Frequency
SELF TEST6
Duty Cycle Change
DUTY CYCLE OUTPUT STAGE
fSET 7
fSET7 Tolerance
Voltage Levels
High
Low
t2 Drift vs. Temperature
Rise/Fall Time
POWER SUPPLY
Operating Voltage Range
Specified Performance
Quiescent Supply Current
Turn-On Time8
TEMPERATURE RANGE
Specified Performance
Test Conditions/Comments
Each axis
Best fit straight line
X sensor to Y sensor
Each axis
VS = 5 V
VS = 5 V
Each axis
TA = 25°C
TA = 25°C
Self test (ST) pin: pulled low (0) to high (1)
RSET = 125 kΩ
RSET = 125 kΩ
I = 25 μA
I = 25 μA
Min
Typ Max Unit
±1.5
±2
±0.2
±1
±0.01
±2
g
% of FS
Degrees
Degrees
%
10
12.5 15 %/g
±0.5
%
25
50
75 %
±2
%
1.0 4.0 %/V
±2
mg/°C
500 1000 μg/√Hz rms
500
Hz
0.002
4.7 μF
5.5
kHz
10
%
1
kHz
0.7
1.3 kHz
VS − 0.2
±35
200
V
200 mV
ppm/°C
ns
3.0
5.25 V
4.75
5.25 V
0.7 1.1 mA
19
ms
−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:
1
fSET =
t2
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.
Rev. 0 | Page 3 of 12
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