Two stage weighted capacitor digital to analog converter
US4616212A · kind A · utility
9Cited by
16References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1985 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Mar 7, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/804
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A weighted capacitor digital to analog converter is disclosed which requires two stages but only one conversion step. By the use of an applied reference voltage and two groups of capacitors, the outputs of each group being coupled to an amplifier and feedback capacitor circuit, various capacitors in these groups can be selectively switched from the reference voltage to ground potential in response to input binary digit signals thereby presenting a predetermined amount of voltage to the output amplifiers depending upon the number and particular combination of capacitors switched or non-switched to ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.