TLE5011 Datasheet, PDF (17/43 Pages) Infineon Technologies AG – GMR Angle Sensor

TLE5011
Specification
Offset Definition
The offset of the X and Y signals is defined as the mean value between the signed maximum and minimum values
of the idealized sine or cosine wave.
O_X
=
X_{----M----A----X-----+----}X_{----M----I--N--}
2
O_Y
=
Y_{----M----A----X----+-----}Y_{---M-----I-N--}
2
Amplitude Definition
The amplitude is defined as half the difference between the signed maximum and minimum values of the idealized
sine or cosine wave.
A_X
=
X_{----M----A----X-----–----}X_{----M----I--N-}
2
A_Y
=
Y_{----M----A----X----–-----}Y_{---M----I--N--}
2
Temperature-dependent behavior
The temperature offset gradients for both channels depend on the value at 25°C. The gradients can be calculated
using the following linear equations:
KT_OX = tco_d_x + (tco_k_x × O_X25)
KT_OY = tco_d_y + (tco_k_y × O_Y25)
O_X25, O_Y25: Offset values at 25°C in digits.
The application note “TLE5011 Calibration” describes in chapter 2.3, how to determine the coefficients (KT_OX,
KT_OY).
Orthogonality Definition
The corresponding maximum and zero-crossing points of the SIN and COS signals do not occur at the precise
distance of 90°. The difference between X and Y phase is called the orthogonality error.
ϕ = ϕ_X – ϕ_Y
jideal = 0°
jX : Phase error of X (= cos) signal
jY : Phase error of Y (= sin) signal
Final Data Sheet
17
V1.1, 2010-05