Current sensor integrated circuit with common mode voltage rejection
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United States of America
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Apr 12, 2022
Grant Date -
Oct 1, 2020
app pub date -
Mar 27, 2019
filing date -
Mar 27, 2019
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Abstract
A current sensor integrated circuit to sense a current through a resistor includes a substrate, a tub disposed in the substrate, an analog front end disposed in the tub and comprising an amplifier having inputs coupled across the resistor and a charging circuit configured to bias the analog front end and the tub to a bias voltage that is a predetermined offset voltage greater than a common mode voltage associated with the resistor. In embodiments, the analog front end is biased to a first bias voltage and the tub is biased to a second, different bias voltage.
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