ACTIVE LINEAR AMPLIFIER INSIDE TRANSMITTER MODULE

摘要

In one example embodiment, a transmitter module includes a header electrically coupled to a chassis ground. First and second input nodes are configured to receive a differential data signal. A buffer stage has a first node coupled to the first input node and a second node coupled to the second input node. An amplifier stage has a fifth node coupled to a third node of the buffer stage and a sixth node coupled to a signal ground that is not coupled to the chassis ground. An optical transmitter has an eighth node coupled to a seventh node of the amplifier stage and a ninth node configured to be coupled to a voltage source. A bias circuit is configured to couple a fourth node of the buffer stage to a bias current source.

主权项

1. A transmitter module comprising:
a differential amplifier configured to receive a differential signal including a first input signal and a second input signal complementary to the first input signal and to output a single-ended signal on an output node, a voltage of the single-ended signal maintaining constant when a voltage of both the first and second input signals increases and when the voltage of both the first and second input signals decreases; an amplifier circuit coupled to the output node and configured to linearly amplify the single-ended signal; and an optical transmitter coupled to the amplifier circuit and configured to be driven by the amplified single-ended signal.