TLE4953

TLE4953C

Data Sheet

6

V 4.0, 2010-04

Vibration suppression algorithm:

The magnetic signal amplitude and the direction information is used for detection of

parasitic magnetic signals. Unwanted magnetic signals can be caused by angular or

airgap vibrations for instance. If an input signal is clearly detected as a vibration signal,

the output of pulses will be suppressed.

A magnetic input signal is classified as parasitic vibration signal if

a. the speed signal amplitude is smaller than the internal hysteresis or

b. the direction signal amplitude is smaller than the internal limit or

c. the direction signal consists of alternating left/right information

The quality of vibration suppression (according a & b) depends on the hysteresis limits

and on the magnitude of the magnetic signal. The bigger the hysteresis the better the

suppression of parasitc signals.

For parasitic signals where items above (a. to c.) are not clearly applicable or at other

more rare cases (e.g. IC startup) vibration suppression is not guaranteed. The

performance of the direction detection and vibration suppression algorithm depends on

the used magnetic circuit and as well on the used target wheel and need to be evaluated.

Please ask for application support if you have questions on the vibration suppresion algorithm.

Package information:

Pure tin covering (green lead plating) is used. Lead frame material is Wieland K62 (UNS:

C18090) and contains CuSn1CrNiTi. Product is RoHS (Restriction of Hazardous

Substances) compliant and marked with letter G in front of the data code marking and

may contain a data matrix code on the rear side of the package (see also information

note 136/03). Please refer to your key account team or regional sales if you need further

information.