TLE4943C datasheet(13/48 Pages) INFINEON

No de pièce	TLE4943C

Description	Hall Based Differential Wheel Speed Sensor with AK protocol

PDF	48 Pages

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Fabricant	INFINEON [Infineon Technologies AG]

Site Internet	http://www.infineon.com

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13 / 48 page

TLE4943C

Data Sheet

V 1.2, July 2018

2.7.1

Definition of Rotation Direction

The direction of rotation is positive if the direction of rotation and the positive Y – axis of the sensor head are

pointing in the same direction. This is shown in Figure 7. The coordinate system must be regarded as fixed in the

sensor head. This must be taken into consideration with assembly variations. In the left representation, frontside

of the sensor (=marking) points to multipole ring (=encoder) located behind. For positive direction of rotation the

direction of rotation bit (DR) is set to "0"

Figure 7

Definition of rotation direction, Sensor Marking (=Frontside) points to encoder

Figure 8

Definition of rotation for back bias application, Sensor Marking (=Frontside) points to encoder

For better understanding three different modes have to be considered: data protocol at normal speed, at high

speed and standstill. Explanations will follow on next pages.

VDD

GND

Back

Positive Movement direction

of target wheel

Positive Magnetic Field

TLE4943C Fiches technique(PDF) 13 Page - Infineon Technologies AG