Circuit for automatically controlling the gain-bandwidth product of operational amplifiers
US4835490A · kind A · utility
5Cited by
3References
2Claims
0Family size
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Inventors
Key dates
| Filing date | Apr 7, 1988 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Apr 7, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G5/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for automatically controlling the gain-bandwidth product of operation amplifiers, where gain-bandwidth product (G*B) of one of the amplifiers placed on the same chip as the amplifiers to be controlled is measured and the resulting signal is used to control through a bias circuit the gain-bandwidth products of all the amplifiers, the value of these products being presettable through the frequency of a control signal sent to the circuit input. The reference amplifier is highly compensated for and placed in the configuration of voltage follower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.