tle5012 Infineon Technologies Corporation, tle5012 Datasheet - Page 21

• Manufacturer Part Number: tle5012
• Description: Gmr-based Angular Sensor For Rotor Position Sensing
• Manufacturer: Infineon Technologies Corporation

3.4.4
After internal calculation the sensor has a remaining error, as shown in
and the operating conditions given in
The overall angle error represents the relative angle error. This error describes the deviation to the reference line
after zero angle definition.
Table 7
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.
Autocalibration
The autocalibration enables online parameter calculation and reduces therefore the angle error due to
misalignments.
After start-up the parameters out of the fuses get loaded into flip-flops. The TLE5012 updates these parameters
after a full revolution. The update can be chosen within the Autocalibration Mode (AUTOCAL) bit. It is possible to
do the update after every 22.5°, 11.25° or after t
3.4.5
The signal path of the TLE5012 is depicted in
calculation. Depending on the filter configuration a different total delay time is achieved. Additional 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. With enabling the prediction, the signal delay time will be reduced
Figure 11
At FIR_MD = 0 only raw values can be read out, due to the more time consuming angle calculation.
Target Data Sheet
Angle Performance
Angle Performance
Signal Processing
TLE5012 Signal path
GMR
GMR
X
Y
ADC
ADC
SD-
SD-
Symbol
α
α
Err
Err
Table 3 “Operating Range” on Page
Filter
Filter
t
del
Min.
-
-
Figure
upd
.
Calculation
Angle
21
11. It consists of the GMR-bridge, ADC, filter and angle
Typ.
0.6
0.6
Values
1)
1)
TLE5012
Max.
1.0
1.6
t
upd
Table
t
delIF
IF
Unit
°
°
7. The error value refers to B
17.
Microcontroller
(Figure
Note / Test Condition
including lifetime and
temperature drift
including temperature
drift
2)3)
12).
V 0.41, 2009-02
Specification
2)3)
TLE5012
Z
= 0mT