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