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參數資料
| 型號： | MXA2500U |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Ultra Low Noise, 1g Dual Axis Accelerometer with Analog Outputs |
| 中文描述： | 超低噪音，1克雙軸加速度計的模擬輸出 |
| 文件頁數： | 2/8頁 |
| 文件大小： | 321K |
| 代理商： | MXA2500U |
MXA2500U SPECIFICATIONS
(Measurements @ 25
°
C, Acceleration = 0
g
unless otherwise noted; V
DD
, V
DA
= 5.0V
unless otherwise specified)
Parameter
Conditions
SENSOR INPUT
Measurement Range
1
Nonlinearity
Best fit straight line
Alignment Error
2
Transverse Sensitivity
3
SENSITIVITY
Sensitivity, Analog Outputs at pins
A
OUTX
and A
OUTY
Change over Temperature (uncompensated)
4
from 25
°
C, at –40
°
C
from 25
°
C, at +105
°
C
Change over Temperature (compensated)
4
from 25
°
C, –40
°
C to +105
°
C
ZERO
g
BIAS LEVEL
0
g
Offset
6
0
g
Voltage
6
0
g
Offset over Temperature
from 25
°
C
from 25
°
C, based on 500mV/
g
NOISE PERFORMANCE
Noise Density, rms
Without frequency compensation
FREQUENCY RESPONSE
3dB Bandwidth - uncompensated
3dB Bandwidth - compensated
5
TEMPERATURE OUTPUT
T
out
Voltage
Sensitivity
VOLTAGE REFERENCE
V
Ref
@2.7V-5.25V supply
Change over Temperature
Current Drive Capability
Source
SELF TEST
Continuous Voltage at A
OUTX
, A
OUTY
under
Failure
supply voltage
Continuous Voltage at A
OUTX
, A
OUTY
under
Failure
supply voltage
A
OUTX
and A
OUTY
OUTPUTS
Normal Output Range
@5.0V Supply
@2.7V Supply
Current
Source or sink, @ 2.7V-5.0V supply
Turn-On Time
@5.0V Supply
@2.7V Supply
POWER SUPPLY
Operating Voltage Range
Supply Current
@ 5.0V
Supply Current
6,7
@ 2.7V
TEMPERATURE RANGE
Operating Range
NOTES
1
Guaranteed by measurement of initial offset and sensitivity.
2
Alignment error is specified as the angle between the true and indicated
axis of sensitivity.
3
Transverse sensitivity is the algebraic sum of the alignment and the
inherent sensitivity errors.
4
The sensitivity change over temperature for thermal accelerometers is
based on variations in heat transfer that are governed by the laws of
physics and it is highly consistent from device to device. Please refer to
the section in this data sheet titled “Compensation for the Change of
Sensitivity over Temperature” for more information.
5
External circuitry is required to extend the 3dB bandwidth. (ref.
Application Note: AN-00MX-003).
MEMSIC MXA2500U Rev A
Page 2 of
8
05/02
Min
±
1.0
475
-50
-0.1
1.20
MXA2500U
Typ
Max
Units
g
% of FS
degree
%
mV/
g
%
%
%
g
V
m
g
/
°
C
mV/
°
C
m
g
/
Hz
Hz
Hz
V
mV/
°
C
V
mV/
°
C
μ
A
V
V
V
V
μ
A
mS
mS
V
mA
mA
°
C
Each Axis
0.5
±
1.0
±
2.0
500
<3.0
0.00
1.25
±
0.75
±
0.375
0.2
25
>160
1.25
5.0
2.5
0.1
5.0
2.7
1.0
525
+100
+0.1
1.30
6
Each Axis
Each Axis
0.4
1.27
5.4
2.65
100
1.23
4.6
2.4
0.1
0.1
2.7
3.0
4.0
-40
@5.0V Supply, output rails to
@2.7V Supply, output rails to
4.9
2.6
100
100
40
3.6
4.9
5.25
4.2
5.8
+105
6
The device operates over a 2.7V to 5.25V supply range. Please note that
sensitivity and zero
g
bias level will be slightly different at 2.7V operation.
For devices to be operated at 2.7V/3.0V in production, they can be
trimmed at the factory specifically for this lower supply voltage operation,
in which case the sensitivity and zero
g
bias level specifications on this
page will be met. Please contact the factory for specially trimmed devices
for low supply voltage operation.
7
Note that the accelerometer has a constant heater power control circuit
thereby requiring higher supply current at lower operating voltage.
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