Patent ID: 11936353
Assignee: CADENCE DESIGN SYSTEMS, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A transmitter for amplifying a differential input signal to a differential output signal across a first output node and a second output node, the transmitter comprising:
a first differential amplifier to amplify each of a first half of the differential input signal and a second half of the differential input signal between a high off level and a pull-up current-source level;
a second differential amplifier to amplify each of the first half of the differential input signal and the second half of the differential input signal between a low off level and a pull-down current-source level; and
an H-bridge current driver connected between a first supply terminal and a second supply terminal, the H-bridge current driver having:
first and second pull-up transistors having control terminals coupled to the first differential amplifier to receive the high off level and the pull-up current-source level;
first and second pull-down transistors having control terminals coupled to the second differential amplifier to receive the low off level and the pull-down current-source level;
wherein the first output node is connected between the first pull-up transistor and the first pull-down transistor, the second output node is connected between the second pull-up transistor and the second pull-down transistor, and the H-bridge current driver drives the differential output signal between the first output node and the second output node; and
a pre-driver disposed between the first differential amplifier and the pull-up transistors.