Temperature constant current reference
US4890052A · kind A · utility
31Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1988 |
| Grant date | Dec 26, 1989 |
| Priority date | — |
| Expiry date | Aug 4, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/907
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A temperature constant Gm current reference circuit which is also independent of voltage across the circuit which includes a circuit for applying a substantially identical voltage to a semiconductor diode as well as to a branch circuit comprising a polysilicon resistor of predetermined doping level in series with plural unidirectional current carrying devices connected in parallel, preferably in the form of a multi-electrode transistor. From eight to twelve such unidirectional current carrying devices are required in the preferred embodiment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.