Adaptive, self-calibrating, low noise output driver

Details Adaptive, self-calibrating, low noise output driver Adaptive, self-calibrating, low noise output driver

2005-12-27

2005-12-27

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000

Reexamination Certificate

active

06980034

ABSTRACT:
An output buffer includes an output stage that includes a transconductance device configured to drive a capacitive load, and a first capacitor coupled to an input of the transconductance device. A converter converts an input clock signal into a current that is provided to charge the first capacitor during a specified interval. The converter includes a feedback loop to adjust the current so as to produce a specified logic level at the specified interval. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

REFERENCES:
patent: 4783601 (1988-11-01), Hartgring et al.
patent: 4947063 (1990-08-01), O'Shaughnessy et al.
patent: 5247241 (1993-09-01), Ueda
patent: 5510744 (1996-04-01), Lien
patent: 5517130 (1996-05-01), Sandhu
patent: 6016081 (2000-01-01), O'Shaughnessy
patent: 6127746 (2000-10-01), Clemente
patent: 6166670 (2000-12-01), O'Shaughnessy
patent: 6329866 (2001-12-01), Watarai
patent: 6617897 (2003-09-01), Lee

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