TLE5011_11 INFINEON [Infineon Technologies AG], TLE5011_11 Datasheet - Page 8
TLE5011_11
Manufacturer Part Number
TLE5011_11
Description
GMR Angle Sensor
Manufacturer
INFINEON [Infineon Technologies AG]
Datasheet
1.TLE5011_11.pdf
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2
2.1
The GMR angle sensor is implemented in vertical integration. This means that the GMR active areas are
integrated above the logic portion of the TLE5011 device. GMR elements change their resistance depending on
the direction of the magnetic field.
Four individual GMR elements are connected to one Wheatstone sensor bridge. These GMR elements sense
either of two components of the applied magnetic field:
•
•
The advantage of a full-bridge structure is that the amplitude of the GMR signal is doubled.
Figure 1
Note: In
The output signal of each bridge is only unambiguous over 180° between two maxima. Therefore two bridges are
orientated orthogonally to each other to measure the 360° angle range.
Using the ARCTAN function, the true 360° angle value can be calculated that is represented by the relation of the
cosine (here X) and sine (here Y) signals.
Because only the relative values influence the result, the absolute size of the two signals is of minor importance.
Therefore, most influences on the amplitudes are compensated.
Final Data Sheet
X component, V
Y component, V
the further explanation
Figure
Functional Description
General
Sensitive Bridges of the GMR Angle Sensor
1, the arrows in the resistor symbols denote the direction of the reference layer, which is used for
X
Y
(cosine)
(sine)
S
(Figure
0°
GMR Resistors
2).
ADC
X
V
+
X
ADC
X
-
GND
8
90°
ADC
Y
+
V
Y
ADC
Y
-
V
DDG
N
Functional Description
V2.0, 2011-03
TLE5011
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