Programmable low drift reference voltage generator
US5852360A · kind A · utility
21Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 1997 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | Apr 18, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/245
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A reference voltage generating method and circuit is disclosed where the output can be programmably calibrated for minimum temperature drift. Output calibration is performed by adjusting a value of resistance of a resistor in a band-gap circuit. Digitally programmable switches are used to incrementally reduce or increase the value of the target resistor. The control circuit according to the present invention is also designed such that it tracks variations in process and temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.