Current sensor integrated circuit with common mode voltage rejection
US11303257B2 · kind B2 · utility
4Cited by
11References
22Claims
0Family size
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Key dates
| Filing date | Mar 27, 2019 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Nov 20, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/625
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.