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AssigneeInternational Business Machines Corporation
InventorsJohn A. Fifield, Russell J. Houghton
Estimating the term…
A compensated driver for maintaining constant impedance during data transfer from an integrated circuit comprises an output portion having an output device to transfer data from the integrated circuit and a mimic circuit portion having a sample output device scaled to a fraction of the output device adapted to accept a reference current and generate a sample voltage. A mimic circuit portion has a sample output device scaled to a fraction of the output device adapted to accept a reference current and generate a sample voltage. A differential amplifier portion is adapted to generate a control voltage in response to a reference voltage and the sample voltage A predrive portion applies either a ground or the predetermined control voltage from the differential amplifier portion to the output stage portion in response to an input, the control voltage regulating the output device in the output stage portion to achieve a more constant impedance
An integrated circuit including a controlled impedance off-chip driver circuit comprising:
A compensated driver for maintaining constant impedance during data transfer from an integrated circuit comprising:
In an integrated circuit, a method of maintaining a desired output impedance of an off-chip driver circuit having an off-chip driver device despite variations in operating conditions, comprising:
A method of compensating a driver for maintaining constant impedance during data transfer from an integrated circuit comprising:
Dependencies are inferred from the claim text.