Semiconductor device comprising a two-stage differential amplifier
US5389891A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1992 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Dec 21, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45702
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A semiconductor device comprises a two-stage differential amplifier, the amplifier comprising a first differential transistor pair whose transistors are coupled by their source electrodes and each receive an input signal, and a second differential transistor pair whose transistors are coupled by their source electrodes, each of these transistors receive the output of one of the branches of the first differential pair, and each supply an output. In the amplifier each branch of the second differential pair is arranged in series with a branch of the first differential pair so as to form two sub-circuits each including a transistor of the first pair with its load and a transistor of the second pair with its load in a manner such that the two transistors of each sub-circuit share the same current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.