Differential amplifier circuit

Details Differential amplifier circuit Differential amplifier circuit

1983-08-26

1985-02-05

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330252, H03F 345

Patent

active

044980540

ABSTRACT:
A differential amplifier circuit includes first and second differential amplifiers, with respective first input terminals thereof connected to each other and first and second current sources for supplying first and second drive currents to drive the first and second amplifiers respectively. The first and second drive currents are set such that their sum is constant. The differential amplifier circuit further includes first and second transistors with the bases thereof connected to second input terminals of the first and second amplifiers respectively and third and fourth current sources respectively connected to the current paths of the first and second transistors and supplying third and fourth drive currents equal to one half the respective second and first drive currents.

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