Patent ID: 8487700

Claim:
A pre-driver for driving a transmitter having a first transmitter terminal and a second transmitter terminal, the pre-driver comprising: a first transistor, which is electrically connected between a first differential output terminal and a first node, and has a gate electrically connected to a first differential input terminal; a second transistor, which is electrically connected between a second differential output terminal and the first node, and has a gate electrically connected to a second differential input terminal; a third transistor, which is electrically connected between the first differential output terminal and a second node, and has a gate electrically connected to the first differential input terminal; a fourth transistor, which is electrically connected between the second differential output terminal and the second node, and has a gate electrically connected to the second differential input terminal; a first impedance element electrically connected between the first differential output terminal and a third node; and a second impedance element electrically connected between the second differential output terminal and the third node, wherein the third node is biased to a preset voltage; wherein the first and second differential output terminals respectively drive the first and second transmitter terminals.