MAGNETIC SENSOR WITH CONCENTRATOR FOR INCREASED SENSING RANGE
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United States of America Patent
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Issued Date -
Jul 29, 2010
app pub date -
Jan 28, 2009
filing date -
Jan 28, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A sensor that includes a magnetic flux concentrator is presented. The sensor includes a sensor integrated circuit with a structure that includes a magnetic field sensor to sense a magnetic field generated by an external magnetic flux source comprising a magnetic article. The stricture has a first surface to face the external magnetic flux source and an opposing second surface. The sensor integrated circuit also includes a lead frame connected to the structure and having a base portion with a first base portion surface to support the stricture and an opposing second base portion surface. Also provided in the sensor is a magnetic flux concentrator to concentrate magnetic flux of the magnetic field. The magnetic flux concentrator can be disposed proximate to the second base portion surface such that the structure and lead frame base portion are located between the magnetic flux concentrator and the external magnetic flux source when the sensor integrated circuit is positioned relative to the external magnetic flux source.
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