For example, the above embodiment discloses that the DDA 316 compares {HEAD ~ the reference voltage} with the differential signal output from {TAIL ~ the output driver} 320 for generating the comparison output 
For example , the above embodiment discloses that the DDA 316 compares { HEAD ~ the reference voltage } with the differential signal output from { TAIL ~ the output driver } 320 for generating the comparison output
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH