Differential input circuit capable of broadening operation range

Details Differential input circuit capable of broadening operation range Differential input circuit capable of broadening operation range

1994-12-22

1997-03-04

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330252, 330295, H03F 345, H03F 368

Patent

active

056083521

ABSTRACT:
A differential input circuit includes a first differential pair having first and second transistors for receiving a differential input signal, and for transmitting a differential output signal. A second differential pair includes third and fourth transistors commonly connected to an output of the first differential pair. A differential amplifier circuit includes a third differential pair having fifth and sixth transistors for inputting the differential input signal commonly with the first differential pair for generating a differential amplify signal which is supplied to the second differential pair; so that the potential of an output operating point is set to operate the third and fourth transistors of the second differential pair.

REFERENCES:
patent: 4977378 (1990-12-01), Tero

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