Delta-sigma modulator with feed-forward path
US6697000B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2002 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Aug 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/45
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A delta-sigma modulator comprising a number of integration stages and having a feed-forward path from a signal input section to the signal path prior to a final integration stage, so as to reduce processing in the majority of integration stages to error processing. A delta-sigma modulator with acceptable dynamic range and incomplete settling can be designed for audio applications using a ratio of gain bandwidth product to sampling frequency in terms of a resolution of the converter. Satisfying the criteria provided by the ratio reduces the gain bandwidth requirement below that previously used as acceptable values in data converter design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.