Low distortion circuit with switched capacitors
US6556072B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1997 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Jan 30, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/249
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switched capacitor circuit comprising an operational amplifier, having first and second input terminals and an output terminal, the first input terminal being connected to a first reference potential. The operational amplifier is provided with a negative feedback network including a first capacitive element which is connected between the second input terminal and the output terminal of the operational amplifier, a second capacitive element which has a first terminal alternately connected to the second input terminal of the operational amplifier and to a reference potential, and a second terminal connected to a first circuit node which is alternately connected to a signal input terminal and said first output terminal of the operational amplifier. The circuit further includes a third capacitive element connected between the circuit node and a reference potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.