Bi-directional bridge circuit having high common mode...

Multiplex communications – Duplex – Transmit/receive interaction control

Reexamination Certificate

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Details

C370S286000

Reexamination Certificate

active

07599316

ABSTRACT:
A bidirectional communications interface is provided that connects a transmitter and a receiver, or a transceiver, to a transmission line. Under an embodiment, the bidirectional interface generates positive and negative polarity data signals using two separate differential amplifiers that receive differential signal pairs from each side of a differential link to the transmission line and the transmitter. The bidirectional interface controls common mode rejection in each of the separate differential amplifiers using bias signals generated in response to an output common mode feedback voltage from each of the differential amplifiers. An output amplifier combines the positive and negative polarity data signals to form single-ended output logic signals. The output logic signals represent data received on the transmission line, and are provided to the receiver.

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Svelto, F. et al.,IEEE Journal on Solid State Circuits, 35(3):356-361 (2000).

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