Digital-to-analog converter using a feedback element matching technique
US4549166A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1982 |
| Grant date | Oct 22, 1985 |
| Priority date | — |
| Expiry date | Mar 24, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/74
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention is characterized that a digital-to-analog converter having ordinal accuracy and one or more current sources are combined and the output currents of the current sources are accurately controlled to have a predetermined relationship with regard to the reference current which is a full-scale value of the analog output current of DAC so that the output current of the current sources designated by bits added to the superior bit of the digital input signal depending on the number of the current sources and the analog output current in response to the digital input signal with the added bits are added to produce an analog signal corresponding to the digital input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.