AAL Sensors
- 19 -
www.nve.com
phone: 952-829-9217 fax: 952-829-9189
General Characteristics:
Parameter
Min
Typical
Max
Unit
Input Voltage Range
<1
4
?5
4
Volts
Operating Frequency
DC
>1
MHz
Operating Temperature Range
-50
150
癈
Bridge Electrical Offset
-4
+4
mV/V
Signal Output at Max. Field
45
mV/V
Nonlinearity
2
% (unipolar)
5
Hysteresis
4
% (unipolar)
5
TCR
+0.11
% / 癈
6
TCOI
-0.28
% / 癈
6
TCOV
-0.40
% / 癈
6
Off Axis Characteristic
Cos ?/DIV>
7
ESD Tolerance
400
V pin-to-pin HBM
Notes:
1. 1 Oersted (Oe) = 1 Gauss in air.
2. See the Appendix for package dimensions and tolerances.
3. Sensors can be provided in die form by special request.
4. GMR AAL-Series sensors are pure ratiometric devices meaning that they will operate properly at extremely low supply
voltages. The output signal will be proportional to the supply voltage. Maximum voltage range is limited by the power
dissipation in the package and the maximum operating temperature of the sensor.
5. Unipolar operation means exposure to magnetic fields of one polarity, e.g. 0 to 30 Gauss, or -2 to -50 Gauss, but not -20 to
+30 Gauss (bipolar operation). Bipolar operation will increase nonlinearity and hysteresis.
6. TCR is resistance change with temperature with no applied field. TCOI is the output change with temperature using a
constant current source to power the sensor. TCOV is the output change with temperature using a constant voltage source
to power the sensor.
7. Beta (? is any deviation angle from the sensitive axis.
AAL002 Temperature Performance,
1mA Current Supply
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
-30
-20
-10
0
10
20
30
Applied Magnetic Field (Oe)
-40C
25C
85C
125C
AAL002 Temperature Performance, 5V Supply
-0.05
0
0.05
0.1
0.1 5
0. 2
0.25
0. 3
0.35
-30
-20
-1 0
0
1 0
20
30
Applied Magnetic Field (Oe)
-40C
25C
85C
1 25C
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