Data Sheet

9

V 1.1

2017-10

TLE5309D

Dual GMR/AMR Angle Sensor

Functional description

1.5

Dual die angle output

The bottom sensor element of the TLE5309D is an AMR sensor, the signal of which is only unambiguous over

180°. Therefore, in the angle range of 180° to 360° of the GMR sensor, the AMR sensor output signal will be in a

range of 0° to 180° again. This behavior is illustrated in Figure 8, which shows the angle calculated according

to Equation (1) and Equation (2) from the output of the GMR and AMR sensors, respectively, for a given

external magnetic field orientation.

If in an application a different output of the two sensors is desired, the connections to the SIN_N and SIN_P or

COS_N and COS_P pins on the printed circuit board can be interchanged. The consequence of this change of

connections is that either the differential sine or the cosine signal are inverted, which corresponds to a change

of rotation direction (see dashed line in Figure 8).

Figure 8

Dual die angle output

Attention: The positioning accuracy of each sensor IC in the package is ±3°. Thus, the relative rotation of the

two sensor ICs can be up to 6°, resulting in a constant offset of the angle output of up to 6°, which has

to be measured in an end-of-line calibration and taken into account during operation of the

TLE5309D.

0°

90°

180°

270°

360 °

90°

180 °

270 °

360°

GMR sensor output

AMR sensor output

external magnetic field angle

AMR sensor output

(SIN inverted)