Patent ID: 6734700
Filing Date: 2004-05-11
Classification: H04L

Abstract:
A differential output driver for receiving a differential input voltage within a specific range having a first portion of a relatively higher voltage and a second portion of a relatively lower voltage and obtaining an identical voltage variation for output voltages of said first portion and said second portion, comprising:a step-down circuit for receiving said first portion of said relatively higher voltage and lowing said relatively higher voltage to a first output voltage; a step-up circuit for receiving said second potion of said relatively lower voltage and rising said relatively lower voltage to a second output voltage; a first compensation circuit electrically connected to said step-down circuit for providing a first bias to transform said first output voltage into a first compensation voltage; and a second compensation circuit electrically connected to said step-up circuit for providing a second bias to transform said second output voltage into a second compensation voltage, wherein said second compensation voltage and said first compensation voltage have said identical voltage variation value, so as to make said driver generate a periodic output voltage having a substantially regular waveform.