Apparatus and method for digital to analog conversion
US6466149B2 · kind B2 · utility
13Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2000 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Dec 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/765
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention includes a segmented digital-to-analog converter (DAC) processing an N-bit input digital signal. A first segment converter processes the most significant bits and subsequent segment converters process the least significant bits of the N-bit input digital signal. The first segment converter includes ballast resistors that nullify the effect of any imbalance of the resistance of the first segment DAC versus the sum of the resistances in the remaining segment DACs. The first segment may be a 2, 4, 6, 8 or higher bit DAC while the second or subsequent segments may similarly be 2, 4, 6, 8, or higher bit DACs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.