Complementary differential amplifier circuit having source-follo

Details Complementary differential amplifier circuit having source-follo Complementary differential amplifier circuit having source-follo

1980-11-03

1982-09-14

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330267, 330261, H03F 345

Patent

active

043497861

ABSTRACT:
A complementary differential amplifier circuit in which a complementary differential amplifier having a first differential pair of first and second bipolar transistors of a first conductivity type and a second differential pair of third and fourth bipolar transistors of a second conductivity type is driven by source-follower circuits comprising a pair of input field effect transistors having their drains coupled together and a pair of source resistors having their first ends connected to the sources of the field effect transistors, respectively, and their second ends coupled together. A first constant voltage source or circuit such as a Zener diode is connected between the drains of the field effect transistors and the emitters of the third and fourth bipolar transistors, while a second constant voltage source or circuit is connected between the emitters of the first and second bipolar transistors and the second ends of the source resistors.

REFERENCES:
patent: 3927333 (1975-12-01), Furuhashi

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