Reference voltage generators, integrated circuits, and methods for operating the reference voltage generators
US9069367B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Dec 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A reference voltage generator is described. The reference voltage generator includes a proportional to absolute temperature (PTAT) current source, the PTAT current source being capable of providing a first current that is proportional to a temperature. The reference voltage generator further includes a current mirror comprising a first transistor and a second transistor, the current mirror configured to generate a second current proportional to the first current, wherein a ratio of the first current to the second current is equal to a ratio of a gate width of the first transistor to a gate width of the second transistor. The reference voltage generator further includes a voltage divider, the voltage divider being capable of receiving the second current, the voltage divider capable of outputting a reference voltage, the reference voltage being substantially independent from a change of the temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.