Chopper-stabilized amplifier with spread-spectrum clocking
US5115202A · kind A · utility
18Cited by
1References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1991 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Apr 10, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/304
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high bandwidth chopper-stabilized amplifier operates main and auxiliary amplifiers at a randomized chopping signal frequency that substantially reduces intermodulation distortion between the input and chopping signals, clock noise and input voltage offset, thus making possible a significant increase in bandwidth. The circuit preferably uses a pseudo-random bit sequence generator to produce a pseudo-random chopping signal frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.