Magnetic angle sensor
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United States of America Patent
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Mar 4, 2014
Grant Date -
Jan 5, 2012
app pub date -
Jun 29, 2011
filing date -
Jul 5, 2010
priority date (Note) -
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Abstract
A magnetic angle sensor comprises a semiconductor chip, at least two magnetic field concentrators of planar shape which are arranged on a surface of the semiconductor chip, and four Hall sensors. Each Hall sensor is assigned to one of the magnetic field concentrators and comprises a Hall element or a cluster of Hall elements. The Hall elements are integrated in the semiconductor chip and are arranged in the region of the edge of the assigned magnetic field concentrator where they are permeated by field lines of the magnetic field which extend approximately perpendicularly to the mentioned surface of the semiconductor chip in the region of the edge of the magnetic field concentrator. Two Hall sensors form a first pair of sensors for measuring a first component of the magnetic field and the two other Hall sensors form a second pair of sensors for measuring a second component of the magnetic field. Connecting lines which connect the Hall sensors which are arranged in the region of the edge of the same magnetic field concentrator run either parallel with respect to each other or form a single common line.
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