Calibrated current source
US6583740B2 · kind B2 · utility
12Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2001 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Nov 21, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/56
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A calibrated current source includes current source having an output node; a calibration circuit; a load circuit; a cascode switching circuit including a pair of cascode switches, one connected between the local circuit and output node, the other connected between the calibration circuit and the output node; and a bias circuit selectively applying a bias voltage to the cascode switches to selectively connect the load circuit and the calibration circuit to the output node while maintaining a constant voltage at the output node and across the current source to provide a consistent current to the load and calibration circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.