Multi-channel, parallel, matched digital-to-analog conversion method, multi-channel, parallel, matched digital-to-analog converter, and analog drive circuit incorporating same
US6169505A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1999 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | Feb 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/82
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Matched digital-to-analog conversions are performed in which, in each of N parallel channels, a digital input word is converted into a corresponding analog output. A digital sequence is generated, a time-varying analog signal having a predetermined relationship to the digital sequence is generated in response to the digital sequence, and the digital sequence and the time-varying analog signal are distributed to the N parallel channels. In each of the N parallel channels, the digital input word is digitally compared with the digital sequence, and, when the digital sequence is numerically equal to the digital input word, the time-varying analog signal is sampled to provide the analog output. The single time-varying analog signal derived from the single digital sequence at an operational speed at which high accuracy and low power consumption can be easily attained enables well-matched digital-to-analog conversions to be performed in any number of channels ranging from a few to many thousands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.