TLE4961-5M datasheet(11/26 Pages) INFINEON

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TLE4961-5M

Functional Description

Data Sheet

Revision 1.0, 2013-07-04

2.6

Default Start-up Behavior

The magnetic thresholds exhibit a hysteresis BHYS =BOP -BRP. In case of a power-on with a magnetic field B within

hysteresis (BOP >B >BRP) the output of the sensor is set to the pull up voltage level (VQ) per default. After the first

crossing of BOP or BRP of the magnetic field the internal decision logic is set to the corresponding magnetic input

value.

VDDA is the internal supply voltage which is following the external supply voltage VDD.

This means for B > BOP the output is switching, for B < BRP and BOP >B>BRP the output stays at VQ.

Figure 2-5

Illustration of the Start-up Behavior of the TLE4961-5M

B > BOP

B < BRP

BOP > B > BRP

Magnetic field above threshold

Magnetic field below threshold

Magnetic field in hysteresis

Power on ramp

The device always applies

VQ level at start -up

independent from the

applied magnetic field !

VDDA

tPon

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