Digital/analog converting apparatus and digital/analog converter thereof
US7436341B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 2006 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Jan 16, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/806
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital/analog converting apparatus and digital/analog converter are provided. The digital/analog converter includes an operational amplifier, a first filter, a first switch, a second filter, a number of conversion units and a second switch. The operational amplifier has an output terminal, an inverse-phase input terminal and a non-inverse-phase input terminal coupled to a reference voltage. The first filter is coupled between the output terminal and the inverse-phase input terminal. The second filter is coupled between the output terminal via the first switch and the inverse-phase input terminal. Each of the conversion units includes a capacitor. The second switch is coupled between the inverse-phase input terminal and the conversion units, and the conversion units are connected in parallel between the second switch and the output terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.