Push-pull output circuit

Details Push-pull output circuit Push-pull output circuit

1985-05-08

1986-09-09

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330273, 330275, H03F 330

Patent

active

046111786

ABSTRACT:
A low voltage sixteen bit digital-to-analog converter operable between +5 and -5 volt power supplies and capable of providing output voltage levels to within about 1.4 volts of +V.sub.CC and -V.sub.CC includes a push-pull output stage with only a pullup transistor and a pulldown transistor connected in series between the positive and negative supply voltages. The output stage includes circuitry that reduces the base voltage of the pullup transistor or pulldown transistor enough to reduce its collector current to near zero, greatly increasing its effective collector-to-emitter breakdown voltage.

REFERENCES:
patent: 3376515 (1968-04-01), Dilley
patent: 3636464 (1972-01-01), Gilbert
patent: 3855540 (1984-12-01), Leidich
patent: 3988693 (1976-10-01), Seki
patent: 4058775 (1977-11-01), Crowle
patent: 4152668 (1979-05-01), Kusumi
patent: 4232273 (1980-11-01), Leidich
patent: 4288755 (1981-09-01), Sakai

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