Mismatch-immune digital-to-analog converter
US8115663B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 2010 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Aug 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/827
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an embodiment, a digital-to-analog converter (DAC) includes inputs for receiving first and second signals encoded as a digital signal pair including overlapping low value portions that are substantially equal in duration to overlapping high value portions, within a frame. The DAC further includes an output terminal for providing an analog signal and includes first and second switches responsive to the first and second signals alter a level of the analog signal based on values of the first and second signals to provide a mismatch-immune DAC functionality. In one instance, the switches couple current sources to a common node. In another instance, the switches configure a resistive network to alter a resistance at an input to an amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.