Differential amplifier arrangement

Details Differential amplifier arrangement Differential amplifier arrangement

1992-09-01

1994-02-01

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330258, H03F 345

Patent

active

052835359

ABSTRACT:
An arrangement includes a differential amplifier pair configured as first and second amplifier branches with first and second input terminals respectively. The first and second amplifier branches are connected at a junction point to a common branch which includes a current source. A control circuit regulates the current of the current source to linearize an input/output characteristic of the amplifier differential pair. The control circuit includes a negative feedback circuit having a comparator, a first input of the comparator being connected to a reference voltage terminal to which an external reference voltage is applied, a second input of the comparator being connected to the amplifier branch junction point and an output of the comparator connected for controlling the current source.

REFERENCES:
patent: 4272728 (1981-06-01), Wittlinger
patent: 5028881 (1991-07-01), Jackson
patent: 5187448 (1993-02-01), Brooks et al.

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