page 1 of 5 data sheet supplement version 1.1 dynamic differential hall effect sensor TLE4927C for all parameters not specified in this document the tle4925c data sheet is valid. type marking ordering code package TLE4927C 27c sp000373702 pg-sso-3-9 pg-sso-3-9
TLE4927C supplement page 2 of 5 1. magnetic characteristics in running mode minimum signal amplitude ?? b min ? 0.35 0.75 1.35 mt
TLE4927C supplement page 3 of 5 figure 1 system operation with hidden adaptive hysteresis s (n) n (s) pin 1 ( vs) pin 3 (q) b2 b1 branded side crankshaft wheel profile small airgap large airgap magnetic field difference ? b= b1-b2 output signal v q enabling point for releasing output: b1-b2< ? b enrp . next zero crossing switches the output off (v q =high). enabling point for operate point: b1-b2> ? b enop . next zero crossing switches the output on (v q =low). ? b hys =| ? b enop - ? b enrp | outside of a permanent magnet the magnetic induction (=flux density) points from north to the south pole. it is common to define positive flux if the south pole of a magnet is on the brande d side of the ic. this is equivalent to the north pole of the magnet on the rear side of the ic. ? ? hidden adaptive hysteresis
TLE4927C supplement page 4 of 5 2. typical hysteresis values pga gainrange hysteresis (peak to peak) fullrange =maxsignal percentage thresholds x1 6 13.5 mt 120mt 5,625% x2 5 10.12 mt 60mt 8.433% x4 4 6.75 mt 30mt 11.25% x8 3 4.5 mt 15mt 15% x16 2 3 mt 7,5mt 20% x32 1 2 mt 3,75mt 26.66% x64 0 1.5mt 1,875mt 40%
TLE4927C supplement page 5 of 5 revision history: december 2007 version 1.1 previous version: 1.0 page subjects (major cha nges since last revision) 1 ordering code added infineon technologies ag ? infineon technologies aim sc all rights reserved. http://www.infineon.c om/products/sensors we listen to your comments any information within this document that you feel is wrong, unclear or missing at all? your feedback will help us to continuously improve the quality of this document. please send your proposal (including a reference to this document) to: sensors@infineon.com
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