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