AAL Sensors

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General Characteristics:

Parameter

Min

Typical

Max

Unit

Input Voltage Range

<1

4

±25

4

Volts

Operating Frequency

DC

>1

MHz

Operating Temperature Range

-50

150

°C

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

% /

TCOI

-0.28

% /

TCOV

-0.40

% /

Off Axis Characteristic

Cos

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

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)

6.

TCR is resistance change with temperature with no applied field

constant current source to power the sensor

to power the sensor.

7.

Beta (

β) 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

0.15

0.2

0.25

0.3

0.35

-30

-20

-100

10

20

30

Applie d M ag ne tic F ie ld (O e )

-40C

25C

85C

125C