Semiconductor integrated circuit device

Details Semiconductor integrated circuit device Semiconductor integrated circuit device

1981-12-21

1983-07-19

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330307, H03F 330

Patent

active

043946259

ABSTRACT:
A semiconductor integrated circuit device including a power amplifier circuit which includes a first PNP transistor, first NPN transistor, second PNP transistor and second NPN transistor which are formed in a common semiconductor substrate. The first PNP transistor is formed as a vertical type one which constitutes, together with the second NPN transistor, a first inverted Darlington circuit. The first NPN transistor, together with the second PNP transistor, constitutes a second inverted Darlington circuit. A d.c. power source is supplied to the emitter of the vertical type PNP transistor, with the emitter of the first NPN transistor being grounded.

REFERENCES:
patent: 3629691 (1971-12-01), Wheatley
patent: 3883813 (1975-05-01), Sekiya
patent: 4038680 (1977-07-01), Yagi et al.

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