Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2006-09-05
2006-09-05
Pascal, Robert (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S261000
Reexamination Certificate
active
07102437
ABSTRACT:
An integrated circuit device includes an amplifier stage comprising a pair of transistors (134A,134B), the respective bases or gates of which are connected together, as well as the respective emitters or sources. The respective drains or collectors of the transistors are capacitively coupled (166) so as to be effectively shorted at the frequencies of operation of the amplifier, A biasing circuit arrangement (144) is also provided which employs bias control feedback to set the bias currents for the transistors. The biasing circuit arrangement takes as its input the current flowing at one of the electrodes (160) of one of the transistors.
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Dority & Manning P.A.
Nguyen Hieu
Pascal Robert
Zarlink Semiconductor Limited
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