Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2006-04-18
2006-04-18
Nguyen, Patricia (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S255000, C330S273000
Reexamination Certificate
active
07030695
ABSTRACT:
An amplifier circuit uses low threshold voltage devices for mid rail response in low voltage applications, but uses a high threshold voltage device at an output stage of the amplifier to generate an output from the amplifier.
REFERENCES:
patent: 4749956 (1988-06-01), Torelli et al.
patent: 5187386 (1993-02-01), Chang et al.
patent: 5631606 (1997-05-01), Tran
patent: 6788142 (2004-09-01), Li et al.
patent: 2005/0001681 (2005-01-01), Chen
Felder Matthew D.
May Marcus W.
Garlick Harrison & Markison LLP
Markison Timothy W.
Nguyen Patricia
Sigmatel, Inc.
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