Data Sheet

22

V 1.1

2017-10

TLE5309D

Dual GMR/AMR Angle Sensor

Specification

synchronicity mismatch for both the AMR and the GMR sensors and perfect compensation of orthogonality

error for the GMR sensor. A typical behavior of a fully compensated angle error with this ongoing calibration is

shown in Figure 19 for the GMR sensor and Figure 20 for the AMR sensor for different ambient temperatures.

The accuracy of the fully compensated angle is listed in Table 8, which is divided into single-ended and

differential output of the sensor.

Angle performance with one-time calibration

To achieve the overall angle error specified, both sensor ICs in the TLE5309D have to be calibrated for offset

and amplitude synchronism at 25°C. Additionally, the GMR sensor has to be calibrated for orthogonality. The

compensation parameters have to be stored and applied on the microcontroller. For the detailed calibration

angle, which is calculated from the single-ended output respectively the differential output of the sensor and

the compensation parameters acquired in the end-of-line calibration.

Typical behaviour of angle error compensation

The angle accuracy performance for ideal compensation and one-time compensation is listed in Table 8

respectively in Table 9. Figure 19 shows for the GMR sensor and Figure 20 for the AMR sensor the typical

behavior of the residual angle error with ongoing respectively one-time calibration at different ambient

temperatures. The comparison of this compensation algorithms demonstrates the superior performance of

the full compensation method over lifetime and temperature with an average residual error below 0.6° for the

GMR sensor and 0.1° for the AMR sensor operating in the specified magnetic field. With one-time

compensation an additional residual angle error occurs due to the temperature dependency of the sensor.

Table 9

One-time calibrated angle error over temperature and lifetime

Parameter

Symbol

Values

Unit

Note or Test Condition

Min.

Typ.

Max.

Overall angle error AMR

1) Including hysteresis error.

2) Assuming a symmetrical load.

3.6

°

E5201

2.4

°

E1211, E2211

Overall angle error AMR

sensor (differential)1)

2.9

°

E5201

1.7

°

E1211, E2211

Overall angle error GMR

sensor (single-ended)1)2)

4.8

°

E5201

4.0

°

E1211, E2211

Overall angle error GMR

sensor (differential)1)

3.8

°

E5201

3.0

°

E1211, E2211