BiCMOS output stage with improved output voltage signal
US5146181A · kind A · utility
4Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1991 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Sep 24, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/3071
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The output stage for a feedback amplifier has a diode circuit to provide quiescent current to the output transistors, and a diode turnoff circuit that renders the diodes non-conductive for an input signal that sends the stage output voltage low. A swing transistor between the stage's output terminal and a low voltage bus is actuated by the same input signal to drive the output voltage to the level of the low voltage bus. Both the diode turnoff circuit and the swing transistor are preferably MOSFETs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.