Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2007-04-03
2009-08-11
Mottola, Steven J (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S292000
Reexamination Certificate
active
07573333
ABSTRACT:
An amplifier in an embodiment of the present invention has MOS transistors connected serially between a power supply VDD and a ground terminal GND; an output terminal Vout connected to a node provided between the MOS transistors; a first mirror capacity provided between the gate of a MOS transistor and the output terminal Vout; and a second mirror capacity provided between the gate of another MOS transistor and the output terminal Vout. The amplifier further includes a first switching circuit for connecting one end of the first mirror capacity to the power supply terminal VDD or to the gate of a MOS transistor; and a second switching circuit for connecting one end of the second mirror capacity to the ground terminal GND or to the gate of another MOS transistor.
REFERENCES:
patent: 7154332 (2006-12-01), Tsuchi
patent: 2005-124120 (2005-05-01), None
McGinn IP Law Group PLLC
Mottola Steven J
NEC Electronics Corporation
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