Current steering cell with code-dependent nonlinearity cancellation and fast settling for low-power low-area high-speed digital-to-analog converters
US9806729B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2016 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Oct 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/742
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Systems and techniques relating to a digital-to-analog converter (DAC) are described. A described DAC cell includes a differential switch pair coupled with a cross-coupled switch pair. Gate terminals of the differential switch pair are arranged to respectively receive an input signal to the cell and an inverted version of the input signal to respectively drive the gate terminals of the differential switch pair. Gate terminals of the cross-coupled switch pair are arranged to respectively receive the input signal and the inverted version of the input signal to respectively drive the gate terminals of the cross-coupled switch pair. The cross-coupled switch pair is configured to reduce or eliminate net differential transient current between switch output terminals of the differential switch pair. A current-to-voltage converter coupled with the switch output terminals of the differential switch pair generates a voltage that forms at least a portion of an output of the digital-to-analog converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.