Amplifiers – With semiconductor amplifying device – Including class d amplifier
Reexamination Certificate
2007-01-23
2007-01-23
Lee, Benny (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including class d amplifier
C330S20700P
Reexamination Certificate
active
10865030
ABSTRACT:
In a multi-channel amplifier switching from a single-ended to a bridge configuration, one of the two operational amplifiers of the output bridge structure of each channel is kept at the design reference voltage (typically to half the supply voltage) for as long as the other operational amplifier of the output bridge structure does not begin to saturate and by connecting in common the gate nodes of the P-type MOS transistors and the gate nodes of the N-type MOS transistors of the output half bridge stages of all the operational amplifiers of the output bridge pairs of all the channels that are eventually configured to function as voltage reference buffer, when configuring the multi channel amplifier to function in a single-ended configuration.
REFERENCES:
patent: 3944941 (1976-03-01), Tsuda
patent: 4330756 (1982-05-01), Moreau
patent: 4494077 (1985-01-01), Fukaya et al.
patent: 4894621 (1990-01-01), Koenig et al.
patent: 5101170 (1992-03-01), Torazzina et al.
patent: 5194821 (1993-03-01), Brambilla et al.
patent: 5365188 (1994-11-01), Botti et al.
patent: 5414774 (1995-05-01), Yumoto
patent: 5621352 (1997-04-01), Botti et al.
patent: 5648742 (1997-07-01), Ghaffaripour et al.
patent: 5654688 (1997-08-01), Allen et al.
patent: 5708390 (1998-01-01), Dunnebacke
patent: 5973368 (1999-10-01), Pearce et al.
patent: 6552607 (2003-04-01), Danielson
patent: 6563377 (2003-05-01), Butler
patent: 2002/0097086 (2002-07-01), Freek
patent: 2002/0125941 (2002-09-01), Nguyen
patent: 2003/0206058 (2003-11-01), Paul et al.
patent: 2004/0004517 (2004-01-01), Ruha et al.
patent: 2004/0227567 (2004-11-01), Llewellyn
patent: 2004/0232978 (2004-11-01), Easson et al.
patent: 2005/0068103 (2005-03-01), Dupuis et al.
patent: 0 425 878 (1991-05-01), None
patent: 0 840 444 (1998-05-01), None
patent: 07 154160 (1995-06-01), None
European Search Report for EP 03 42 5358 dated Nov. 24, 2003.
European Search Report for EP 03 42 5357 dated Nov. 25, 2003.
Botti Edoardo
Cagnetti Fabio
Flanagan Krista
Graybeal Jackson Haley LLP
Han J. Mark
Jorgenson Lisa K.
Lee Benny
LandOfFree
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