Mechanism for and method of biasing magnetic sensor
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United States of America Patent
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Issued Date -
Sep 30, 2004
app pub date -
Mar 25, 2003
filing date -
Mar 25, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A magnetic sensor package having a biasing mechanism involving a coil-generated, resistor-controlled magnetic field for providing a desired biasing effect. In a preferred illustrated embodiment, the package broadly comprises a substrate; a magnetic sensor element; a biasing mechanism, including a coil and a first resistance element; an amplification mechanism; a filter capacitor element; and an encapsulant. The sensor is positioned within the coil. A current applied to the coil produces a biasing magnetic field. The biasing magnetic field is controlled by selecting a resistance value for the first resistance element which achieves the desired biasing effect. The first resistance element preferably includes a plurality of selectable resistors, the selection of one or more of which sets the resistance value.
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