BiCMOS output stage with improved output voltage signal

Details BiCMOS output stage with improved output voltage signal BiCMOS output stage with improved output voltage signal

1991-09-24

1992-09-08

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330 51, 330300, H03F 330

Patent

active

051461811

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.

REFERENCES:
patent: 4482868 (1984-11-01), Whatley

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