0°

10

11

12

13

14

15

16

1

9

8

7

6

5

4

3

2

1

Reference Direction:

Resistance low when

external magnetic field is

in this direction

Y

X

Final Datasheet

8

Rev. 1.0

2018-04-04

TLE5014

Functional Description

Figure 1-2 Sensitive bridges of the GMR sensor (not to scale)

Attention:

Due to the rotational placement inaccuracy of the sensor IC in the package, the sensors 0° position

may deviate by up to 3° from the package edge direction indicated in Figure 1-2.

In Figure 1-2 the arrows in the resistors represent the magnetic direction which is fixed in the reference layer.

If the external magnetic field is parallel to the direction of the Reference Layer, the resistance is minimal. If

they are anti-parallel, resistance is maximal.

The output signal of each bridge is only unambiguous over 180° between two maxima. Therefore two bridges

are oriented orthogonally to each other to measure 360°.

With the trigonometric function ARCTAN2, the true 360° angle value is calculated out of the raw X and Y signals

from the sensor bridges.