The digital processing circuitry converts {HEAD ~ the output} of the comparator 113 to {TAIL ~ a digital signal}, averages the digital signal, and generates a multi bit digital bias signal 
to
The digital processing circuitry converts { HEAD ~ the output } of the comparator 113 to { TAIL ~ a digital signal } , averages the digital signal , and generates a multi bit digital bias signal
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH