Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1996-03-20
1997-10-28
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330253, 330260, 330300, 330307, H03F 345
Patent
active
056821204
ABSTRACT:
A differential amplifier circuit of the present invention includes a device ("transistor") having a back gate electrode formed above the base region of a bipolar transistor between the emitter and collector regions. The back gate electrode of one such transistor is connected to the collector or emitter of another transistor in order to provide positive feedback so that the operation of each transistor is enhanced. The operational speed of the transistors is increased and the amplification factor of the differential amplifier circuit is improved to provide stabilized circuit operation. Accordingly, the degree of circuit integration and the operational stability of the differential amplifier are enhanced as compared with a differential amplifier circuit constructed of conventional bipolar transistors or FETs.
REFERENCES:
patent: 4232270 (1980-11-01), Marmet et al.
Kabushiki Kaisha Toshiba
Mullins James B.
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