Supply-voltage driver for a differential amplifier
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United States of America Patent
Stats
-
Jun 29, 1982
Grant Date -
N/A
app pub date -
Feb 11, 1980
filing date -
Feb 11, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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