Datasheet TLE5x09A16(D) (Infineon) - 5

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TLE5x09A16(D) Analog AMR/GMR Angle Sensor Functional description 1 Functional description 1.1 General
The Magneto Resistive (MR) sensors are implemented using vertical integration. This means that the MR sensitive areas are integrated above the analog portion of the ICs. These MR elements change their resistance depending on the direction of the magnetic field. On each sensor, four individual MR elements are connected in a Wheatstone bridge arrangement. Each MR element senses one of two components of the applied magnetic field: • X componen t, V (cosine) or the x • Y componen t, V (sine) y The advantage of a full-bridge structure is that the amplitude of the MR signal is doubled and temperature effects cancel out.
GMR Sensor
GMR Resistors VX VY 0°
N S
ADCX+ ADCX- GND ADCY+ ADCY- VDD 90°
Figure 2 Sensitive bridges of the GMR sensor
Note: In
Figure 2
, the arrows in the resistors symbolize the direction of the reference layer. The size of the sensitive areas is greatly exaggerated for better visualization. With the trigonometric function ARCTAN2, the true 360° angle value that is represented by the relation of X and Y signals can be calculated according to
Equation (1)
. α = arctan2(Vx,Vy) (1) The ARCTAN2 function is a microcontroller library function which resolves an angle within 360° using the x and y coordinates on a unit circle. Data Sheet 5 V 2.0 2018-12 Document Outline Features Functional Safety Product Validation Potential Applications Description Table of Contents 1 Functional description 1.1 General 1.2 Pin configuration 1.3 Pin description 1.4 Block diagram 1.5 Dual die angle output 2 Specification 2.1 Application circuit 2.2 Absolute maximum ratings 2.3 Sensor specification 2.3.1 Operating range 2.3.2 Electrical parameters 2.3.3 Output parameters 2.4 Error diagnosis 2.5 Angle performance 2.6 Electrostatic discharge protection 2.7 Electro magnetic compatibility (EMC) 3 Package information 3.1 Package parameters 3.2 Package outlines 3.3 Footprint 3.4 Packing 3.5 Marking 4 Revision history