AC coupled multistage high gain operational amplifier
US6756842B2 · kind B2 · utility
12Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | May 8, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45652
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An a.c. coupled multistage high gain operational amplifier includes at least two gain stages, each having an input and an output; an a.c. coupling level shifting capacitance interconnecting the output of a first stage to the input of a second stage; and a charging circuit interconnecting with the a.c. coupling level shifting capacitance and the input of the second stage to charge the a.c. coupling level shifting capacitance in a track phase and to connect the a.c. coupling capacitance to the input of the second stage during a hold phase for dissociating the bias voltages of the stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.