A feedback path is employed to follow {HEAD ~ voltage} applied to an output pad through {TAIL ~ substrate bias voltage} 
applied through
A feedback path is employed to follow { HEAD ~ voltage } applied to an output pad through { TAIL ~ substrate bias voltage }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL