Output circuit having a terminal used for a plurality of signals

Details Output circuit having a terminal used for a plurality of signals Output circuit having a terminal used for a plurality of signals

1989-05-26

1990-07-03

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330259, H03F 345

Patent

active

049394770

ABSTRACT:
An output circuit built in a semiconductor integrated circuit having an output terminal comprises a first transistor having a base and a collector connected to the output terminal, a second transistor having a collector connected to a power source circuit, an input signal source connected to the emitters of the first and second transistors, and a DC amplifier circuit having an input end connected to the output terminal and an output end connected to the base of the second transistor, and operated according to a preset bias potential. A signal occurring at the output terminal is fed back to the base of the second transistor via the DC amplifier circuit.

REFERENCES:
patent: 4223276 (1980-09-01), Nagano
patent: 4435685 (1984-03-01), Eckert et al.
patent: 4517525 (1985-05-01), Dijkmans et al.
patent: 4577336 (1986-03-01), Kriedt et al.
Sanyo Semiconductor Division, "Bipolar IC for Car Audio," 1988 Sanyo Semiconductor Data Book, Mar. 1, 1988, pp. 94-108.

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