Magnetic field sensor for detecting motion of an object
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United States of America Patent
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Jan 30, 2018
Issued Date -
N/A
app pub date -
Jul 14, 2016
filing date -
Jul 14, 2016
priority date (Note) -
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Abstract
A magnetic field sensor for detecting motion of an object includes a magnet configured to generate a magnetic field and having a first surface adjacent to the object and a second surface distal from the object. The first surface of the magnet has a centerline axis substantially parallel to and disposed on the first surface, and the centerline axis is diagonal with respect to a motion axis substantially parallel to and disposed on the first surface and parallel to which the object moves. The magnetic field sensor also includes a semiconductor substrate disposed between the magnet and the object, the semiconductor substrate supporting a plurality of spaced magnetoresistance elements disposed along a sensing element axis substantially parallel to the centerline axis of the magnet and configured to generate a respective plurality of magnetic field signals in response to the motion of the object with respect to magnetic field.
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