Patent ID: 7417463
Filing Date: 2008-08-26
Classification: H04B,H04L

Abstract:
1. A wireline transmission circuit comprising: a first circuit configured to produce a first variable current; a second circuit configured to produce a first static current; a trans-impedance amplifier configured to output a first analog signal at a first output node in response to the first variable cunent and the first static current received at a first input node; a first feedback resistor connected to the first input node and the first output node; and a second feedback resistor connected to a second input node and a second output node, wherein the trans-impedance amplifier is further configured to output a second analog signal at the second output node in response to a second variable current and a second static current received at a second input node, wherein a common-mode voltage at the first input nodes is different from a common-mode voltage at the first output nodes by more than 0.1V, and wherein a common-mode voltage at the second input nodes is different from a common-mode voltage at the second output nodes by more than 0.1V.