a digital to analog converter that converts {HEAD ~ the digital output signal} into {TAIL ~ an analog output signal}, wherein 
into
a digital to analog converter that converts { HEAD ~ the digital output signal } into { TAIL ~ an analog output signal } , wherein
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH