Apparatus and method for minimizing spurious harmonic noise in switched current steering architectures
US6794924B2 · kind B2 · utility
2Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2001 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Aug 21, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/04106
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switched current steering device includes a switch activation unit coupled to a set of actual switches and an associated set of dummy switches. Based upon current actual switch states, next actual switch states as specified by a data stream, and current dummy switch states, the switch activation unit selectively generates dummy signals that indicate or specify next dummy switch states. The switch activation unit generates the dummy signals such that the total number of actual switches and dummy switches experiencing state transitions remains constant from one switching cycle to another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.