Variable capacitance voltage shifter and amplifier and a method for amplifying and shifting voltage
US6275178A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2000 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Jan 27, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/456
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high-speed voltage shifter/amplifier, a sigma delta modulator having a high-speed voltage shifter/amplifier and method for performing an amplification/a voltage shift to an analog signal. The voltage shifter/amplifier comprising a capacitor and an isolator; the isolator is coupled to the capacitor. The capacitor is adapted to receive a control signal, to be charged by an input signal, and to provide an output signal. The capacitor has a capacitance that is responsive to a level of the control signal, and a change in the capacitance of the capacitor forces a change in a level of the output signal; and the isolator is adapted to electrically isolate the capacitor when the capacitance is changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.