Digital/analog conversion circuit
US7423558B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2007 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Feb 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/667
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital/analog conversion circuit includes a plurality of capacitors, a voltage application section, a connection section, and a control section. The control section is operable to perform the charge sharing operation and to collect the charge supplied from the voltage application section. The control section sets, for at least M higher order ones of the digits of the binary code, the number of times by which the one capacitor takes part in the charge sharing operation within a series of operations before the charge supplied from the voltage application section by the voltage application operation is shared by the last charge sharing operation to twice the number of times by which the one capacitor takes part in the voltage application operation or the charge retaining operation, M being an integer equal to or greater than two.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.