Digital differential amplifier switching stage with current switch
US5473272A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Jun 28, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/666
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital switching stage includes a differential amplifier having a first and a second differential amplifier branch. A first resistor is connected in the first differential amplifier branch and has a first terminal and a second terminal. The first terminal is a terminal for a first supply potential. A first bipolar transistor is connected in an emitter follower circuit with respect to the second terminal of the first resistor and has an emitter being connected to an output terminal. A second bipolar transistor has a base and has a collector-to-emitter path being connected between the output terminal and a terminal for a second supply potential. A second resistor is connected in the second differential amplifier branch and has a first terminal and a second terminal. The first terminal of the second resistor is connected to the output terminal and the second terminal of the second resistor is connected to the base of the second bipolar transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.