Digitally controllable on-chip resistors and methods
US7602327B2 · kind B2 · utility
2Cited by
18References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2007 |
| Grant date | Oct 13, 2009 |
| Priority date | — |
| Expiry date | May 8, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C10/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A digitally controllable resistor includes a substrate and at least one digitally controllable resistance stage formed on the substrate. Each of the stage(s) can include a first resistor connected in series with a switch and a second resistor connected in parallel with the first resistor and the switch. Each stage can also include a control line connected to the switch for opening and closing the switch in response to a control bit associated therewith. Multiple resistance stages can be connected in series and the digitally controllable variable resistor can be integrated onto a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.