Switched capacitor digital-to-analog converter
US7830290B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2009 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | May 26, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/667
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switched capacitor digital-to-analog converter (SC-DAC) is provided. The SC-DAC of the present invention can eliminate an influence of a reference voltage source caused by a signal dependent loading at each clock cycle, so as to completely solve a harmonic distortion of an analog output signal converted by a conventional SC-DAC. In addition, when the SC-DAC of the present invention has a plurality of converting channels, since the reference voltage source is not influenced by the effect of signal dependent loading of any converting channel, so that each converting channel can be regarded to have a separate state, and thus the purpose of channel separation can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.