Re: Difference between Offset Control & Common Mode Feed
maxwellequ,
Thanks for clarifying my confusion,
I have another question, if somehow I need to have a chains of indentical opamps connected cascadingly (such as limiting amplifiers), and I want to make sure the common mode of the eye diagram is really locked at the center, is it vital to have both CMFB and Offset cancellation implemented in the system?
From your explaination, I have a fairly good guess that in my scenario here, having CMFB will help centering the eye diagram at the desire CM while Offset cancellation will ensure 50% duty cycle of the waveform. Am I right?