Threshold extracting method and circuit using the same
US5672960A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1995 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Dec 19, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/262
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A transistor threshold extraction circuit including at least two transistors of the same type each having a control terminal and having essentially a same threshold voltage, each of the two transistors also having first and second main conduction terminals, a current mirror circuit having at least two input-output terminals with the two terminals coupled respectively to the two transistors so as to supply bias currents, a voltage generator connected between the two control terminals, and a feedback path between the control terminals and one of the input-output terminals. An output of the extraction circuit is coupled to one of the control terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.