Successive approximation analog to digital converter
US7642946B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2008 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | Apr 7, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/785
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system and method are provided allowing for successive approximation analog to digital conversion. A first differential voltage is sampled and held during a first cycle. The first differential voltage is converted to a differential current. A second differential voltage is generated based on the differential current flowing through parallel-coupled respective first and second variable resistances. First and second portions of the second differential voltage are compared to produce a comparison result therefrom. Successive approximation is used to generate a signal based on the comparison result, the signal being an output signal and being used to control resistances of respective ones of the first and second variable resistances during subsequent cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.