Randomized time-interleaved digital-to-analog converters
US9966969B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2017 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Apr 18, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/662
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A time-interleaved digital-to-analog converter (DAC) uses M DAC cores to convert a digital input signal whose digital input words are spread to different DAC cores to produce a final analog outputs. The M DAC cores, operating in a time-interleaved fashion, can increase the sampling rate several times compared to the sampling rate of just one DAC. However, sequential time-interleaving DAC cores often exhibit undesirable spurs at the output. To spread those spurs to the noise floor, the time-interleaving DAC cores can be selected at a pseudo randomized manner or in a specific manner which can break up the sequential or periodic manner of selecting the DAC cores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.