Supply-voltage driver for a differential amplifier

Details Supply-voltage driver for a differential amplifier Supply-voltage driver for a differential amplifier

1980-02-11

1982-06-29

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330297, H03F 345

Patent

active

043374417

ABSTRACT:
A supply voltage driver for one or more monolithic differential amplifiers sharing common power supplies comprises an additional monolithic differential amplifier operated as a voltage follower suspended between a current source and a current sink. Reference Zener diodes are coupled between the voltage follower output and the power supply terminals of the differential amplifiers to establish operating voltages which track an input signal. Additional current-boosting transistors are provided to provide fast slew rate during signal transitions. Overdrive circuitry is provided to limit the maximum and minimum signal levels.

REFERENCES:
patent: 3453554 (1969-07-01), Shoemaker
patent: 3478275 (1969-11-01), Walker
patent: 4092701 (1978-05-01), Bumgardner

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