TLE4974

Features:

· Static operation (zero speed)
· Digital output signal
· Two-wire and three-wire configuration possible
· Large temperature range
· Protection against overvoltage
· Protection against reversed polarity
· Output protection against electrical disturbances


Application

Two possible applications are shown in figure 7 and 8 (Tooth and Magnet Wheel). The differences between two-wire and three-wire application is shown in figure 10.


Pinout




Specifications

TA = 40 to 150 °C
Parameter	Symbol	Limit Values		Unit	Remarks
		min.	max.
Supply voltage	VS	-40	30	V	-
Output voltage	VQ	-0.7	30	V	-
Output current	IQ	-	50	mA	-
Output revers current	IQ	-	50	mA	-
Junction temperature	Tj	-	150	V	-
Junction temperature	Tj	-	170	°C	1000 h
Junction temperature	Tj	-	210	°C	40 h
Storage temperature	Tstg	-40	150	°C	-
Thermal resistance	Rth JA	-	190	K/W	-
Current through inputprotection device	ISZ	-	200	mA	t < 2 ms; v = 0.1
Current through inputprotection device	IQZ	-200	200	mA	t < 2 ms; v = 0.1

Description

The differential Hall sensor IC TLE4974 detects the motion of, and static position of, ferromagnetic and permanent magnet structures by measuring the differential flux density of the magnetic field. To detect ferromagnetic objects the magnetic field must be provided by a back biasing permanent magnet (a magnet attached to the back, unmarked, side of the IC package).