Operational amplifier and method for operating an operational amplifier
US12301188B2 · kind B2 · utility
0Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2022 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Nov 15, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45462
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an operational amplifier, including: a symmetrical differential amplifier; a local common mode feedback circuit coupled to the symmetrical differential amplifier; a tail current source circuit including at least one first transistor and a second transistor and a current source resistor. The tail current source circuit is configured to adjust a control voltage of the first transistor by using the second transistor such that a predetermined reference current flows through a load path of the first transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.