Differential amplifier and semiconductor integrated circuit...

Details Differential amplifier and semiconductor integrated circuit... Differential amplifier and semiconductor integrated circuit...

2006-04-11

2006-04-11

Mengistu, Amare (Department: 2673)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S204000

Reexamination Certificate

active

07027027

ABSTRACT:
A differential amplifying circuit according to the present invention, comprising: a first differential pair having first and second transistors of the same conduction type, which outputs differential output signals in accordance with differential input signals supplied to gate terminals of said first and second transistors from differential output terminals; a second differential pair having third and fourth transistors having the same conduction type as that of said first and second transistors with threshold voltages different from each other, which outputs differential output signals in accordance with said differential input signals supplied to gate terminals of said third and fourth transistors from said differential output terminals; a bias supply part which supplies bias current to said first and second differential parts; and a differential pair control part which controls whether or not to operate said second differential pair.

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