Method and apparatus for controlling switching noise in digital-to-analog interface
US6897798B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2004 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Jan 26, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/74
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus control switching noise in a digital-to-analog interface in a mixed-signal circuit. The digital-to-analog interface includes a first plurality (K) of switching elements and a second plurality (M) of dummy switching elements, the second plurality (M) being smaller than the first plurality (K). The switching noise control includes (a) receiving a digital data signal, (b) determining a number (N) of the switching elements to be switched for the digital data signal, and (c) switching the second plurality (M) less the number (N) of the dummy switching elements simultaneously with switching the number (N) of the switching elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.