Amplifiers – With periodic switching input-output
Reexamination Certificate
2007-03-21
2008-10-28
Nguyen, Khanh V (Department: 2817)
Amplifiers
With periodic switching input-output
C330S253000, C330S257000, C330S258000
Reexamination Certificate
active
07443234
ABSTRACT:
Disclosed are a multi-level differential amplifier that includes first to third input terminals; an output terminal; first to third differential pairs; a current source circuit for supplying currents to the respective first to mth differential pairs; a load circuit connected to first and second nodes to which first and second outputs of each of output pairs of the first to third differential pairs are connected in common; an amplifier stage receiving a signal from at least one node of the first and second nodes as an input and having its output connected to the output terminal; and a capacitance element. A data output period includes first and second periods. In the first period, responsive to a control signal, a first input of each input pair of the first to third differential pairs is made a non-inverting input, the second input is made an inverting input, the first inputs are connected to the respective first to third input terminals, and the second inputs of the first to third differential pairs are connected in common with one end of the capacitance element and with the output terminal. In the second period, responsive to a control signal, the first input of each input pair of the first to third differential pairs is made an inverting input and the second input is made a non-inverting input, the first inputs of each of the input pairs are connected in common with the output terminal, and the second inputs are connected in common with the one end of the capacitance element.
REFERENCES:
patent: 6388653 (2002-05-01), Goto et al.
patent: 6448836 (2002-09-01), Kokubun et al.
patent: 6586990 (2003-07-01), Udo et al.
patent: 7081792 (2006-07-01), Kasai et al.
patent: 7116161 (2006-10-01), Nakahira
patent: 7368983 (2008-05-01), Nishimori
patent: 11-249624 (1999-09-01), None
patent: 2001-292041 (2001-10-01), None
patent: 2005-110065 (2005-04-01), None
NEC Corporation
Nguyen Khanh V
Sughre Mion, PLLC
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