Self-starting bandgap reference devices and methods thereof
US10228715B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2018 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Jul 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A self-starting bandgap reference circuit comprises a bias current source configured to provide a bias current. A bandgap core coupled to the bias current source includes a first device configured to receive the bias current and provide a first current output based on the bias current and a second device configured to receive the bias current and provide a second current output based on the bias current. A difference mirror coupled to the first device and the second device receives the first current output and the second current output and is configured to provide a difference current between the second current output and the first current output that is a proportional-to-absolute temperature current. A voltage reference output and a current reference output coupled to the difference mirror receives the proportional-to-absolute temperature current and provides a voltage reference and a current reference based on the proportional-to-absolute temperature current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.