Differential amplifier circuit for regenerating low-amplitude complementary signals
US4780687A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1987 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Jun 3, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/09436
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential amplifier circuit for regenerating complementary analog signals of low amplitude includes a differential pair of field effect transistors whose common sources are connected to a first supply voltage V.sub.SS via a load, a pair of loads which are connected to the drain of each transistor of the differential pair and to a second supply voltage, respectively, and a level regenerating circuit having a pair of diodes for deriving the signals from the drain of each transistor of the differential pair. The signals transported by the diodes are applied to the lower transistor of a pair of push-pull stages whose upper transistor directly receives the signal derived from the drain of the other transistor of the differential pair, while the source of the lower transistors of the push-pull stages is connected to ground and the drain of the upper transistor of these stages is connected to the second supply voltage V.sub.DD, the complementary amplified output signals being available at the central points of the push-pull stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.