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Analog Column clock for 3-OpAmp topology Instrumentation Amplifier
Question: Does the analog column clock has an effect on the output of 3-OpAmp topology Instrumentation Amplifier?
Yes.The conversion amplifier stage of 3-OpAmp topology instrumentation amplifier is implemented using SC block which uses analog column clock for its operation. So proper column clock should be selected for the column in which the conversion amplifier is placed. To get noise free output from instrumentation amplifier the user should ensure that the selected column clock provides sufficient OSR (Over Sampling Ratio) to the input signal given to instrumentation amplifier.