Amplification interface, and corresponding measurement system and method for calibrating an amplification interface
US11709185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2022 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Feb 14, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45514
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplification interface includes first and second differential input terminals, first and second differential output terminals providing first and second output voltages defining a differential output signal, and first and second analog integrators coupled between the first and second differential input terminals and the first and second differential output terminals, the first and second analog integrators being resettable by a reset signal. A control circuit generates the reset signal such that the first and second analog integrators are periodically reset during a reset interval and activated during a measurement interval, receives a control signal indicative of offsets in the measurement sensor current and the reference sensor current, and generates a drive signal as a function of the control signal. First and second current generators coupled first and second compensation circuits to the first and second differential input terminals as a function of a drive signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.