{HEAD ~ The DA} converted circuit unit is arranged between the comparator circuit unit and {TAIL ~ the arithmetic operation amplifying circuit unit} 
{ HEAD ~ The DA } converted circuit unit is arranged between the comparator circuit unit and { TAIL ~ the arithmetic operation amplifying circuit unit }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL