Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1985-11-20
1987-06-02
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330 51, 455312, H03F 126
Patent
active
046707204
ABSTRACT:
A switching device is provided for suppressing a signal. A signal source is connected to a first differential amplifier. The first differential amplifier receives an operating current from a current source. A second differential amplifier receives an operating current from a current source, and has an input connected to a common signal terminal. A conversion circuit connects the first differential amplifier and second differential amplifier outputs. An output amplifier is connected to the conversion circuit output for amplifying a single ended output of the conversion circuit. A signal from the output amplifier is suppressed by switching the operating current of said first differential amplifier and said output amplifier off, while simultaneously switching the operating current of the second differential amplifier on.
Briody Thomas A.
Mullins James B.
Rich Marianne R.
Streeter William J.
U.S. Philips Corporation
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