HALL SENSOR CIRCUIT
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United States of America Patent
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Jun 7, 2022
Grant Date -
Jun 9, 2022
app pub date -
Dec 8, 2020
filing date -
Dec 8, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A Hall sensor circuit includes a first Hall sensor, a second Hall sensor, a first preamplifier circuit, a second preamplifier circuit, a subtractor circuit, and a duty cycling circuit. The first preamplifier circuit includes an input and an output. The input is coupled to the first Hall sensor. The second preamplifier circuit includes a first input, a second input, and an output. The first input is coupled to the second Hall sensor. The subtractor circuit includes a first input coupled to the output of the first preamplifier circuit, a second input coupled to the output of the second preamplifier circuit, and an output coupled to the second input of the second preamplifier circuit. The duty cycling circuit is coupled to the second preamplifier circuit and the second Hall sensor.
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