Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1985-03-05
1986-05-20
Laroche, Eugene R.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330257, 330288, H03F 345
Patent
active
045904359
ABSTRACT:
A differential amplifier includes first and second current sources, first and second pnp transistors having bases connected to first and second input terminals and emitters connected to the first current source, an npn transistor having a base, collector and emitter respectively connected to the collector of the first pnp transistor, the first current source and a ground terminal, and an npn transistor having a base, collector and emitter respectively connected to the collector of the second pnp transistor, the second current source and the ground terminal.
REFERENCES:
patent: 3946325 (1976-03-01), Leidich
patent: 4232271 (1980-11-01), Dobkin et al.
Kabushiki Kaisha Toshiba
LaRoche Eugene R.
Mottola Steven J.
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