Dual channel analog to digital converter
US6674386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | May 29, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/123
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A dual channel ADC uses two digital to analog converters (DACs) and a single comparator to convert two analog input channels. One DAC is used for successive approximation, while the other DAC is used for calibration. The dual channel ADC allows for sampling and conversion of single-ended, pseudo-differential, and fully differential analog input signals while maintaining layout symmetry and reducing crosstalk without substantially increasing circuit area. The single comparator is used for converting both analog input channels. Additional logic (such as switches or digital logic) is used to connect the input sampling capacitors and DACs to the appropriate inputs of the comparator for converting the analog input channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.