Circuit for generating a reference voltage
US8704588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2010 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Nov 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45466
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A bandgap voltage reference circuit for generating a bandgap voltage reference. An embodiment comprises a current generator controlled by a first driving voltage for generating a first current depending on the driving voltage, and a first reference circuit element coupled to the controlled current generator for receiving the first current and generating a first reference voltage in response to the first current. The circuit further comprises a second reference circuit element for receiving a second current corresponding to the first current; said second reference circuit element is adapted to generate a second reference voltage in response to the second current. The circuit further comprises an operational amplifier having a first input coupled to the first circuit element and a second input coupled to the second reference circuit element. The circuit also comprises a control circuit comprising first capacitive element and second capacitive element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.