Common operational amplifier and gain circuit and A/D converter using thereof
US6946987B1 · kind B1 · utility
9Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2005 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Feb 1, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/44
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A common operational amplifier for a pipeline circuit is provided. The common operational amplifier is used by the stage circuits of the pipeline circuit by turns according to a predetermined timing. The common operational amplifier comprises an operational amplifier circuit, a multiplexer circuit and a demultiplexer circuit. The multiplexer circuit is provided for selecting a signal set of a stage circuit to be amplified to couple to the operational amplifier circuit, and the demultiplexer circuit is provided for transmitting the amplified signal set to the corresponding stage circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.