A PRUNING CALIBRATION FLASH ANALOG-TO-DIGITAL CONVERTER (ADC) AND A METHOD OF CALIBRATING AND MANUFACTURING THE SAME

摘要

A method to perform a pruning calibration of an analog-to-digital converter "ADC" commences with the selection (22) of the subset of comparators as operational. Unselected comparators within the ADC are powered down (24). The pool of comparators includes more comparators than are required to produce an N-bit output, i.e. the pool includes redundant comparators. The comparators of the ADC are not required to be accurate, and trip voltages of the pool are distributed over an input voltage range of the ADC.