tle5011 Infineon Technologies Corporation, tle5011 Datasheet - Page 19

• Manufacturer Part Number: tle5011
• Description: Gmr Based Angular Sensor
• Manufacturer: Infineon Technologies Corporation

Orthogonality Definition
The corresponding maximum and zero crossing points of the SIN and COS signals do
notoccur at the precise distance of 90°. The difference between X and Y phase is called
the ’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 accomplished 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 conditions are specified in
The above gained values must 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 the above determined parameters.
Temperature Measurement
The signal amplitude
conditions must be measured and stored.
Calibration Conditions
All errors are related to calibration performed using following conditions:
Table 9
Parameter
Flux density
Temperature
Target Data Sheet
Calibration
GMR calibration conditions
Symbol Limit Values
B
T
CAL
CAL
T
25
of the temperature measurement path at the calibration
Table
Table
min.
-
-
ϕ
9.
9.
=
typ.
50
25
ϕ
19
X
–
ϕ
Electrical and Magnetic Parameters
max.
-
-
Y
Unit
mT
°C
Notes
B
Z
= 0 mT
V 0.11, 2008-01
TLE5011