Curvature-corrected bandgap reference
US12111675B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 2024 |
| Grant date | Oct 8, 2024 |
| Priority date | — |
| Expiry date | Apr 9, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A reference circuit generates a reference circuit output signal that has a curvature-corrected linear dependence on the temperature. It includes a first reference circuit, with a first output signal that is based on a base-emitter voltage of a bipolar junction transistor (BJT) and a second reference circuit, with a second output signal that is based on a gate-source voltage of a metal-oxide-semiconductor (MOS) transistor operating in weak inversion mode. It has an output circuit that adds the first output signal and the second output signal to obtain the reference circuit output signal.The reference circuit output signal may be a current or a voltage. It may be independent of the temperature, or have a positive or negative temperature coefficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.