A low power analog to {HEAD ~ digital converter} generates, during a calibration process, {TAIL ~ a plurality} of digital control words as a function of non linearities in the circuit components 
A low power analog to { HEAD ~ digital converter } generates , during a calibration process , { TAIL ~ a plurality } of digital control words as a function of non linearities in the circuit components
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH