TLE4942 datasheet(5/18 Pages) INFINEON

5 / 18 page

TLE4942, TLE4942C

TLE4942 - TLE4942C Data Sheet

February 2002

In addition to the speed signal, the following information is provided by varying the

length of the output pulses in Figure 3 (PWM modulation):

Airgap Warning range = Warning

Warning information is issued in the output pulse length when the magnetic field is

below a critical value. (E. g. the airgap between the Hall Effect IC and the target

wheel exceeds a critical value). The device works with reduced functionality.

Assembly position range = EL

EL information is issued in the output pulse length when the magnetic field is below a

predefined value (the airgap between the Hall Effect IC and the target wheel exceeds

a predefined value). The device works with full functionality.

Direction of rotation right = DR-R

DR–R information is issued in the output pulse length when the target wheel in front

of the Hall Effect IC moves from the pin GND to the pin VCC.

Direction of rotation left = DR-L

DR–L information is issued in the output pulse length when the target wheel in front

of the Hall Effect IC moves from the pin VCC to the pin GND.

Figure 5

Definition of rotation direction

S 0015

4942

DR-L

DR-R

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