Voltage detector using body effect
US5945869A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 1998 |
| Grant date | Aug 31, 1999 |
| Priority date | — |
| Expiry date | May 6, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C5/145
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circuit is designed with a first reference circuit (202) for producing a first reference voltage in response to a first voltage. A second reference circuit (204) produces a second reference voltage in response to the first voltage and a second voltage. A sampling circuit (210) stores the first reference voltage and the second reference voltage and produces a first sample voltage and a second sample voltage. A comparator circuit (222) is coupled to receive the first sample voltage and the second sample voltage. The comparator circuit produces a control signal in response to a difference between the first sample voltage and the second sample voltage. A generator circuit includes an oscillator circuit (226) and a pump circuit (230). The generator circuit produces a first supply voltage in response to the control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.