A/D converter for performing pipeline processing
US6700524B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Sep 27, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/44
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An A/D converter comprises a pipeline stage array in which plural pipeline stages are connected in series, each pipeline stage performing a pipeline operation on an inputted analog voltage to output a digital voltage; a number-of-bits control circuit for outputting a number-of-bits selection signal which indicates whether the operation of each pipeline stage should be carried out or halted, according to a number-of-bits control signal which indicates a resolution; and a correction circuit for compensating a digital value to be output, according to the number-of-bits control signal. Therefore, when resolution of the A/D converter, which is requested by the system, is changed, only the pipeline stages required for realizing the requested resolution are operated while the other pipeline stages are halted, whereby a reduction in power consumption of the A/D converter is realized and, simultaneously, a breakdown of an output from the A/D converter is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.