Folded cascode operational amplifier having improved phase...

Details Folded cascode operational amplifier having improved phase... Folded cascode operational amplifier having improved phase...

2011-03-15

2011-03-15

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S257000, C330S302000, C330S261000

Reexamination Certificate

active

07907011

ABSTRACT:
A folded cascode operational amplifier having an improved phase margin due to pole-zero cancellation by using a plurality of cascode-connected bias circuits and frequency compensation capacitors.

REFERENCES:
patent: 6018268 (2000-01-01), Tan
patent: 6476675 (2002-11-01), Sun
patent: 7187235 (2007-03-01), Moon
patent: 7342450 (2008-03-01), Jones
patent: 7362173 (2008-04-01), Knausz
patent: 7586373 (2009-09-01), Kim
patent: 7639078 (2009-12-01), Rayanakorn et al.
patent: 7652538 (2010-01-01), Choi
patent: 2007/0120604 (2007-05-01), Li

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