TLE5012-E0742 INFINEON [Infineon Technologies AG], TLE5012-E0742 Datasheet - Page 23

• Manufacturer Part Number: TLE5012-E0742
• Description: GMR-Based Angular Sensor for Rotor-Position Sensing
• Manufacturer: INFINEON [Infineon Technologies AG]

3.4.4
After internal calculation the sensor has a remaining error, as shown in
0mT and the operating conditions given in
The overall angle error represents the relative angle error. This error describes the deviation from the reference
line after zero angle definition.
Table 9
Parameter
Overall Angle Error (with auto-
calibration)
Overall Angle Error (without auto-
calibration)
1) At 25°C, B = 30 mT
2) Including hysteresis error, caused by revolution direction change.
3) Only with calibrated GMR-compensation parameters of customer setup; Relative error after zero angle definition.
4) Not subject to production test - verified by design/characterization
5) 0 h
Autocalibration
The autocalibration enables online parameter calculation and therefore reduces the angle error due to
temperature drift, lifetime drift, and misalignments.
The TLE5012 is a pre-calibrated sensor. After start-up, the parameters out of the laser fuses get loaded into flip-
flops. The TLE5012 needs more than a full revolution to generate new parameters. The update mode can be
chosen within the Interface Mode 2 register (AUTOCAL). The parameters are updated in a smooth way to avoid
an angle jump on the output. Therefore only one LSB will be changed within the choosen range or time. The
autocalibration is done continuously.
•
•
•
•
3.4.5
The signal path of the TLE5012 is depicted in
calculation. Depending on the filter configuration, various total delay times are achieved. In addition to this delay
time, the delay time of the interface has to be considered. The delay time leads to an additional angle error at
higher speeds. By enabling the prediction, the signal delay time can be reduced
the difference between current and last angle value and calculates the output value by adding this difference to
the current value. A linear prediction is thereby achieved.
Final Data Sheet
α
AUTOCAL Modes:
(
00: No autocalibration
01: Autocalibration Mode 1. Only one LSB to final values within the update time t
10: Autocalibration Mode 2. Only one LSB update over one full revolution. After update of one LSB, the
11: Autocalibration Mode 3. Only one LSB to final values within an angle range of 11.25°.
setting).
autocalibration will calculate the parameters again.
t
+
) 1
=
2
Angle Performance
Angle performance
Signal Processing
⋅
α
) (
t
−
α
(
t
−
) 1
Symbol
α
α
Err
Err
Table 3 “Operating range” on Page
Figure
Min.
-
-
23
12. It consists of the GMR bridge, ADC, filter, and angle
Typ.
0.6
0.6
Values
1)
1)
Max.
1.0
1.6
Table
°
Unit
°
11. The error value refers to B
(Figure
18.
upd
Note / Test Condition
including lifetime and
temperature drift
including temperature
drift
(depending on FIR_MD
13). The prediction uses
2)3)5)
Specifications
V 1.0, 2010-11
2)3)4)
TLE5012
Z
(3)
=