Differential amplifier with auto bias adjust

Details Differential amplifier with auto bias adjust Differential amplifier with auto bias adjust

1982-05-13

1984-04-10

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

H03F 345

Patent

active

044424086

ABSTRACT:
In a differential amplifier circuit a closed loop bias adjustment circuit samples the lower of the output levels of the differential amplifier output stages to control a variable current source. This variable current source draws current from the amplifier to bias the output transistors thereof to provide optimum speed, maximum voltage swing, and minimum power dissipation.

REFERENCES:
patent: 3434069 (1969-03-01), Jones
patent: 3435365 (1969-03-01), Greeson, Jr.
patent: 3551836 (1970-12-01), Greeson, Jr.
patent: 3721914 (1973-03-01), Nakamura
patent: 4396891 (1983-08-01), Johansson et al.
Burke "Differential Sense Switch," IBM Tech. Disclosure Bulletin, vol. 9, No. 7, Dec. 1966.
IBM Technical Disclosure Bulletin, vol. 6, No. 3, pp. 70-71, "Amplifier with Automatic Gain Control", H. L. Funk (8/63).

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