Reduced-size sensor circuit
US7358819B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2006 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Feb 4, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/153
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to circuits configured for implementation in sensors, sensors employing such circuits, and methods of operating and manufacturing such sensors and/or circuits. In at least some embodiments, the circuit includes a capacitor having a first input terminal and a first output terminal, a first amplifier having second and third input terminals and a second output terminal, and a second amplifier having fourth and fifth input terminals and a third output terminal. The first output terminal of the capacitor is coupled at least indirectly to the second input terminal, the fourth input terminal, and the third output terminal. Additionally, the second amplifier provides feedback current with respect to the capacitor depending upon signals provided to the fourth and fifth input terminals. The capacitor and each of the amplifiers can be implemented on an integrated circuit without any need for external components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.