Class B driver

Details Class B driver Class B driver

2005-01-18

2005-01-18

Williams, Howard (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S153000, C375S296000

Reexamination Certificate

active

06844837

ABSTRACT:
A communication circuit, Ethernet controller card, and method comprises K digital-to-analog converters each receiving a corresponding digital control signal and each providing a corresponding analog control signal, wherein K is at least two; K voltage-to-current converters each providing a corresponding bi-level transmit signal component in accordance with a respective one of the corresponding analog control signals; and wherein the corresponding bi-level transmit signal components of each of the K voltage-to-current converters are combined to produce a J-level transmit signal, wherein J=K+1.

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“Gigabit Ethernet 1000BASE-T,” Gigabit Ethernet Alliance, copyright 1997.
Sedra et al. “Operational Amplifiers,” Chapter 2 Section §2.4 In Microelectronic Circuits. Third Edition, 1991, pp. 61-63.

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