Multistage differential amplifier
US7053711B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2004 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Sep 17, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/331
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates to a multistage differential amplifier circuit having a multistage differential amplifier which has an input stage and at least one output stage connected downstream of the input stage, having a CMFB circuit whose input side is connected to outputs on the output stage, having a first control loop, which can be used to set a load for the input stage using a first control signal from the CMFB circuit, having at least one second control loop, which is arranged between the outputs of the output stage and a control input on the CMFB circuit and which uses an output common-mode level which can be tapped off at the output stage to produce a continuous-time, second control signal for setting an operating point for the CMFB circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.