Reducing coupling noise in an output driver

Details Reducing coupling noise in an output driver Reducing coupling noise in an output driver

2006-08-08

2006-08-08

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Output switching noise reduction

C327S027000, C327S034000

Reexamination Certificate

active

07088125

ABSTRACT:
An output driver may reduce coupling noise. The output driver may include a first transistor, a second transistor, and/or a noise-eliminating portion. The first transistor may have a first terminal connected to a first voltage, a second terminal connected to a first node, and a gate to which data is applied. The second transistor may have a first terminal connected to the first node and a second terminal connected to an output node. The noise-eliminating portion may be connected between the gate of the first transistor and a gate of the second transistor. The noise-eliminating portion may be a capacitor. The capacitor may substantially eliminate coupling noise introduced at the gate of the second transistor, due to coupling capacitance between the gate of the second transistor and the output node and coupling capacitance between the gate of the second transistor and the first node, by using the data applied to the gate of the first transistor.

REFERENCES:
patent: 4862018 (1989-08-01), Taylor et al.
patent: 5917361 (1999-06-01), Wong et al.
patent: 6169421 (2001-01-01), Bryan et al.
patent: 2001-177388 (2001-06-01), None

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