Output buffer having capacitive drive shunt for reduced noise

Details Output buffer having capacitive drive shunt for reduced noise Output buffer having capacitive drive shunt for reduced noise

1990-07-05

1991-05-21

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307451, 307263, 307310, H03K 1714, H03K 494

Patent

active

050178075

ABSTRACT:
An output buffer maintains low noise across a range of process variations, temperatures, and voltages. This is achieved by limiting the drive signal so as to reduce the switching speed of the output buffer as the other variables tend to increase the speed. This is accomplished by limiting the current through the pre-driver stage by controlling the conductance of a shunt transistor connected to a grounded capacitor.

REFERENCES:
patent: 4499387 (1985-02-01), Konishi
patent: 4797579 (1989-01-01), Lewis
patent: 4823029 (1989-04-01), Gabara
patent: 4849661 (1989-07-01), Bazes
patent: 4859870 (1989-08-01), Wong et al.
patent: 4894561 (1990-01-01), Nogami
patent: 4947061 (1990-08-01), Metz et al.

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