Method and apparatus for phase control of a digital-to-analog converter
US7079064B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2005 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Sep 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/66
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital-to-analog converter system is provided that controls a phase of an output signal produced by a digital-to-analog converter (DAC). A digital input signal and a phase control signal are each applied to the DAC. The DAC then produces an analog output signal based on the input signal and the phase control signal, wherein the analog signal comprises an output with a frequency and a phase component. The DAC further produces a phase adjustment signal that is conveyed to an auxiliary circuit that determines a phase difference between a reference signal and the phase adjustment signal and generates the phase control signal based on the phase difference, wherein a phase of the analog output signal is adjusted based on the phase control signal. By controlling the phase of an analog output signal of a DAC, DAC-to-DAC skew may be minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.