Output circuit

Details Output circuit Output circuit

1990-04-26

1991-08-06

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307451, 307452, 307463, 307473, H03K 1716, H03K 1902

Patent

active

050380567

ABSTRACT:
In order to reduce undesirable output noise, an output circuit is provided which includes a first output MOSFET which is interposed between an output terminal and a first power source voltage, and a second output MOSFET which is interposed between the output terminal and a second power source voltage. In particular, in accordance with one aspect of the invention, a feedback circuit is interposed between the output terminal and the gate of the first output MOSFET or/and between the output terminal and the gate of the second output MOSFET to negatively feedback voltage to provide a gentle level change for the output voltage. In other embodiments, a short-circuit arrangement is provided which is interposed between the gate and source of the first output MOSFET or/and between the gate and source of the second output MOSFET. The short-circuit arrangement is temporarily held in a transferring state at the initial stage of a process in which the corresponding first or second output MOSFET is turned on to provide the desired gentle level change.

REFERENCES:
patent: 4490633 (1984-12-01), Noufer et al.
patent: 4638187 (1987-01-01), Boler et al.
patent: 4760283 (1988-07-01), Weaver
patent: 4777389 (1988-10-01), Wu et al.
"MOS integrated circuits", pp. 246-249, Robert E. Krieger Publishing Company.

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