Capacitively cross-coupled DCS emitter-follower output stage
US5389832A · kind A · utility
6Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1994 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Mar 3, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An output stage device for an enhanced differential current switch. The output stage receives a differential signal pair from a prior logic stage and must shift the output signals to the levels necessary for the next stage. The output stage has a differential pair of emitter followers that are capacitively cross coupled. Capacitors couple the collector of a first transistor to the emitter of the second. The capacitors can be formed from forward biased diodes or transistors. The result is a more rapid falling output transition while reducing power requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.