Patent ID: 7626424
Filing Date: 2009-12-01
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 current and the first static current received at a first input node, wherein the first analog signal varies in a first output range, wherein the first analog signal has a first voltage offset smaller than 20% of the first output range, wherein the trans-impedance amplifier is configured to output a second analog signal at a second output node in response to a second variable current and a second static current received at a second input node, wherein the second analog signal varies in a second output range, wherein the second analog signal has a second voltage offset smaller than 20% of the second output range, wherein the first variable current varies in a range between 0 and Full-Scale (FS) and the first static current has an amplitude of about −FS/2; a first feedback resistor connected to the first input node and the first output node; and a second feedback resistor connected to the second input node and the second output node.