Output stage circuit and operational amplifier

Details Output stage circuit and operational amplifier Output stage circuit and operational amplifier

2009-08-03

2010-10-26

Choe, Henry K (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

C330S255000

Reexamination Certificate

active

07821340

ABSTRACT:
An output stage circuit is disclosed, which includes a first PMOS transistor, a second PMOS transistor, a first NMOS transistor, and a second NMOS transistor. By using twin-well CMOS transistors and a specific circuit configuration, the invention supports a HALF AVDD structure, reduces power consumption and saves the cost of triple-well CMOS process.

REFERENCES:
patent: 5210506 (1993-05-01), Koch et al.
patent: 6255909 (2001-07-01), Muza
patent: 6559721 (2003-05-01), Ausserlechner et al.
patent: 6794942 (2004-09-01), Smith
patent: 7057459 (2006-06-01), Ueno
patent: 7570116 (2009-08-01), Haila et al.

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