Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2007-05-03
2008-11-04
Choe, Henry K (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S255000
Reexamination Certificate
active
07446607
ABSTRACT:
A regulated cascode circuit includes a first PMOS FET and a second PMOS FET connected in series between a first terminal that receives a first supply voltage and an output terminal, a first NMOS FET and a second NMOS FET connected in series between the output terminal and a second terminal that receives a second supply voltage, and a regulation circuit. The regulation circuit outputs a first control signal for stabilizing a voltage at a drain of the first PMOS FET to a gate of the second PMOS FET based on a voltage of the drain of the first PMOS FET and outputs a second control signal for stabilizing a voltage change in a source of the first NMOS FET to a gate of the first NMOS FET based on a voltage of the source of the first NMOS FET.
REFERENCES:
patent: 6778014 (2004-08-01), Rennig
patent: 6804305 (2004-10-01), Chan
patent: 6806743 (2004-10-01), Saito et al.
patent: 7119616 (2006-10-01), Benzer
patent: 7183850 (2007-02-01), Pessl
patent: 7209005 (2007-04-01), Martins
patent: 2001-085957 (2001-03-01), None
patent: 2003-249829 (2003-09-01), None
Jung Mu-Kyeng
Kim Jae-Whui
Kong Bai-Sun
Choe Henry K
Mills & Onello LLP
Samsung Electronics Co,. Ltd.
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