tle5010 Infineon Technologies Corporation, tle5010 Datasheet - Page 19

• Manufacturer Part Number: tle5010
• Description: Gmr Based Angular Sensor
• Manufacturer: Infineon Technologies Corporation

Draft
Orthogonality Definition
The corresponding maximum and zero crossing points of the SIN and COS signals are
not exactly in a distance of 90°. The difference between X and Y phase is called
’Orthogonality Error’
jideal = 0°
jX : Phase error of X (= cos) Signal
jY : Phase error of Y (= sin) Signal
5.4
GMR Values
The end-of-line calibration can be done using following sequence.
The conditions are specified in
• Turn magnetic field left and measure X and Y values
• Calculation of Amplitude, Offset, Phase correction values of left turn
• Turn further 90° left and 90° back right without measurement
• Turn magnetic field right and measure X and Y values
• Calculation of Amplitude, Offset, Phase correction values of right turn
• Calculation of mean values of Amplitude, Offset, Phase correction values
The above gained values have to be stored in a non-volatile memory. They are used for
the correction of the read-out X and Y values before the angular calculation.
The resulting angular deviation is calculated using above determined parameters.
Temperature Measurement
The signal amplitude
has to be measured and stored.
Calibration Conditions
All errors are related to a calibration done using following conditions:
Table 9
Parameter
Flux density
Temperature
Preliminary Data Sheet
Calibration
GMR calibration conditions
T
Symbol Limit Values
B
T
25
CAL
CAL
of the temperature measurement path at calibration conditions
Table
min.
-
-
9.
=
typ.
30
25
19
X
–
Electrical and Magnetic Parameters
max.
-
-
Y
Unit
mT
°C
Notes
B
Z
= 0 mT
V 0.9, 2007-05
TLE5010