High-speed low-drift operational amplifier
US4293819A · kind A · utility
4Cited by
3References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 17, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Sep 17, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high-speed low-drift operational amplifier is disclosed in which a coefficient circuit having a voltage gain of more than 1 is formed employing a low frequency operational amplifier with a low-drift characteristic to multiply an input voltage by the voltage gain, the coefficient circuit and a low pass filter are connected in cascade to form a drift compensating circuit, and the inverting and non-inverting input terminals of a wide-band operational amplifier are connected to the input and output terminals of the drift compensating circuit, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.