Bandgap reference circuit, corresponding device and method
US11531365B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2021 |
| Grant date | Dec 20, 2022 |
| Priority date | — |
| Expiry date | Jul 20, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/262
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A bandgap circuit includes a supply node as well as a first and second bipolar transistors having jointly coupled base terminal at a bandgap node providing a bandgap voltage. First and second current generators are coupled to the supply node and supply mirrored first and second currents, respectively, to first and second circuit nodes. A third circuit node is coupled to the first bipolar transistor via a first resistor and coupled to ground via a second resistor, respectively. The third circuit node is also coupled to the second bipolar transistor so that the second resistor is traversed by a current which is the sum of the currents through the bipolar transistors. A decoupling stage intermediate the current generators and the bipolar transistors includes first and second cascode decoupling transistors having jointly coupled control terminals receiving a bias voltage sensitive to the bandgap voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.