Enhanced differential current switch compensating upshift circuit
US5274285A · kind A · utility
0Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Sep 1, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/286
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A compensating upshift circuit providing low signal degradation and operating at high speed and at low power. Capacitor shunted diodes cross-couple the collectors and bases of two transistors. The cross-coupling eliminates signal swing degradation in the upshift circuit and controls current through the two collector resistors. Equalized collector resistor current eliminates signal swing degradation while providing an upshift circuit with short delays. The capacitor shunted diodes can be replaced by diode connected transistors configured to provide the necessary collector-base capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.