Differential voltage output digital-to-analog converter
US6853323B1 · kind B1 · utility
7Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 2004 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | May 4, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/747
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital-to-analog converter (DAC) for use in high-speed wireless communications. The DAC of the invention comprises a plurality of current steering cells to bi-directionally provide a differential current output. When the DAC sets the differential current output to zero for example, each of the current steering cells establishes dummy branches between a pair of current sources and thereby prevents the current sources from floating. This in turn enables the DAC to operate with a higher update rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.