Regulated cascode current source with wide output swing
US6903539B1 · kind B1 · utility
3Cited by
4References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2003 |
| Grant date | Jun 7, 2005 |
| Priority date | — |
| Expiry date | Dec 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/262
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
System for a current source with enhanced output impedance. A preferred embodiment comprises a cascode current source arranged in a current mirror configuration (such as current source 600) with a pair of level shifters arranged in a source-follower configuration (such as level shifters 505 and 510). The level shifters reduce the compliance voltage of the current source, permitting use in low voltage applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.