TLE4942 Datasheet, PDF (5/18 Pages) Infineon Technologies AG – Differential Two-Wire Hall Effect Sensor IC

TLE4942, TLE4942C
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 V_CC.
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 V_CC to the pin GND.
DR-L
S 0015
4942
DR-R
Figure 5 Definition of rotation direction
TLE4942 - TLE4942C Data Sheet
5
February 2002