{HEAD ~ An apparatus} for controlling {TAIL ~ supply voltage} for a successive approximation register analog to digital converter , comprising: 
for controlling
{ HEAD ~ An apparatus } for controlling { TAIL ~ supply voltage } for a successive approximation register analog to digital converter , comprising :
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH