EEPROM circuit voltage reference circuit and method for providing a low temperature-coefficient voltage reference
US6882582B2 · kind B2 · utility
6Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2002 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Mar 29, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C27/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A voltage reference circuit (40) is provided for producing a low temperature-coefficient analogue trim value. A pair of EEPROMs (50 and 60) are arranged such that the trim value is the difference between two EEPROM transistor threshold voltages. The substantially temperature dependent components of threshold voltage cancel out leaving only the substantially temperature independent trim value. Therefor the temperature coefficient of the voltage reference circuit (40) is negligible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.