System and method for analog to digital (A/D) conversion
US8537046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2011 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Dec 20, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/468
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a method for converting an analog input value to a digital output value is disclosed. A successive approximation is performed. The analog input is quantized to a first quantized value, which is converted to a first analog value using a DAC. The first analog value is subtracted from the analog input value to form a first residue. The first residue is quantized to form a second quantized value, and a second residue is formed by converting the second quantized value to a second analog value using the DAC and subtracting the second analog value from the first residue value. The second residue is then quantized to form a third quantized value. The first, second and third quantized values are converted into a digital output value. The first, second and third quantized values each have at least three levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.