I/O driver for integrated circuit with output impedance control

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United States of America Patent

PATENT NO 7443194
SERIAL NO

12109285

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Abstract

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An I/O driver has v/i characteristic control for maintaining a substantially flat output impedance response using a transmission gate configuration at an I/O output pad. The configuration includes a linear resistive element electrically connected at an I/O pad for limiting a processed data I/O signal, an active impedance element for receiving and processing the data signal, which comprises data represented by a series of voltage state transitions, and pull-up and pull-down array calibration words, for generating and outputting a processed I/O output signal to the resistive element to output a substantially flat v/i response at switching of the data signal.

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Patent Owner(s)

Patent OwnerAddress
GLOBALFOUNDRIES INCMAPLES CORPORATE SERVICES LIMITED PO BOX 309 UGLAND HOUSE GRAND CAYMAN KY1-1104

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, David Jia Endwell, NY 11 42
Lawson, William Frederick Vestal, NY 9 52
Mann, David William Endwell, NY 2 20

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