Fully-differential reference voltage source
US4926138A · kind A · utility
5Cited by
2References
5Claims
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Key dates
| Filing date | Jul 5, 1989 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Jul 5, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The source is apt to generate a fully-differential reference voltage at the output terminals, whereto precisely-balanced loads are applied. The voltage reference is obtained from a bandgap voltage source fed with currents proportional to the temperature, in order to minimize thermal voltage variations. Suitable circuits for starting the normal source operation after switching on are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.