Bandgap reference voltage with low noise sensitivity
US6411158B1 · kind B1 · utility
15Cited by
15References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Sep 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A bandgap reference voltage circuit is provided that substantially prevents noise sensitivity. The bandgap reference voltage circuit includes an operational amplifier, transistors, and a resistive element on one input of the operational amplifier. The resistive element substantially prevents noise from creating a non-zero mean change in current across one of the transistors. Thus, the resistive element substantially precludes noise from being rectified by a transistor, so that the output reference voltage of the bandgap reference voltage circuit is substantially stable and fixed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.