Highly linear variable gain amplifier
US7202741B2 · kind B2 · utility
8Cited by
4References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Mar 5, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45591
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A variable-gain amplifier circuit uses a pair of single-ended operational amplifiers to amplify complementary portions of a differential input signal. By using two single-ended amplifiers instead of a single differential amplifier, linearity is significantly improved. In addition, common mode feedback circuitry is eliminated along with harmonic distortion and other forms of noise which tend to negative affect the quality of the signal output from the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.