Differential amplifier circuit improved to shorten a circuit rec

Details Differential amplifier circuit improved to shorten a circuit rec Differential amplifier circuit improved to shorten a circuit rec

1989-03-16

1990-04-03

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330253, H03F 345

Patent

active

049144006

ABSTRACT:
A differential amplifier circuit whereby recovery time produced by a large amplitude of a voltage difference appearing between differential input signals fed to an input stage of the differential amplifier circuit is shortened by adding two transistors. The two added transistors are connected to nodes where two transistors of the differential input stage are connected to two loads of the differential input stage respectively. One of the two added transistors directly contributes to shorten the recovery time by reducing a voltage at one of the nodes from which an output signal voltage of the differential amplifier circuit is obtained. The other of the two added transistors is for obtaining a symmetric property of the differential amplifier circuit.

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