Photocurrent compensation using active devices
US4891606A · kind A · utility
5Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1989 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Feb 9, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/082
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A current mirror having an amplification factor K providing a photocurrent compensation current to a node having a mismatch of junction photocurrent. The load device on the input leg of the current mirror has an area 1/K times the device width of the larger device junction area at the node and a device width ratio with drive device of the input leg of a current mirror equal to the ratio of mismatch J at the node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.