Operational amplifier and driver circuit using the same

Details Operational amplifier and driver circuit using the same Operational amplifier and driver circuit using the same

2006-10-03

2006-10-03

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

Reexamination Certificate

active

07116171

ABSTRACT:
An operational amplifier is provided including first and second conduction types of differential amplifier circuits, an output circuit for outputting an output signal by first and second driver transistors of the first and the second conduction types. The differential amplifier circuits of the first and the second conduction types include first and second differential pairs of transistors of the first and the second conduction types to which an input signal and the output signal are respectively input. When the transistor of a p-type is in an off-state, a first auxiliary circuit subsidiarily drives a first output node (a first inverted output node). When the transistor of an n-type is in an off-state, a second auxiliary circuit subsidiarily drives a second output node (a second inverted output node).

REFERENCES:
patent: 5212457 (1993-05-01), Frey et al.
patent: 6268769 (2001-07-01), Yamauchi et al.
patent: 6424219 (2002-07-01), Kato
patent: 6586998 (2003-07-01), Moraveji
patent: 6605993 (2003-08-01), Suzuki
patent: 6710660 (2004-03-01), Shacter
patent: 6727753 (2004-04-01), Moon
patent: 2003-157054 (2003-05-01), None

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