Output buffer having capacitive drive shunt for reduced noise
US5017807A · kind A · utility
41Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1990 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Jul 5, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00361
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An output buffer maintains low noise across a range of process variations, temperatures, and voltages. This is achieved by limiting the drive signal so as to reduce the switching speed of the output buffer as the other variables tend to increase the speed. This is accomplished by limiting the current through the pre-driver stage by controlling the conductance of a shunt transistor connected to a grounded capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.