{HEAD ~ The main differential amplifier} is coupled to receive {TAIL ~ the shifted differential voltage signal} and is configured to amplify the shifted differential voltage signal to generate an output voltage signal 
{ HEAD ~ The main differential amplifier } is coupled to receive { TAIL ~ the shifted differential voltage signal } and is configured to amplify the shifted differential voltage signal to generate an output voltage signal
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH