Adaptive analog-to-digital conversion based on signal prediction

摘要

Methods and apparatuses are described for performing adaptive analog-to-digital conversion and time-to-delay conversion by using signal prediction to adjust reference voltages of adjustable comparators.

主权项

1. An integrated circuit (IC), comprising:
sample-and-hold circuitry to sample an input signal based on a clock signal, and to output a sampled voltage for at least a holding period; a plurality of adjustable comparators, wherein each adjustable comparator has a respective reference voltage that is independently adjustable, and wherein each adjustable comparator outputs a result signal based on comparing the sampled voltage with the adjustable comparator's reference voltage; and control-logic circuitry to predict a voltage range of a future sample of the input signal based on only a current sample of the input signal, and to set reference voltages of the plurality of adjustable comparators based on the predicted voltage range of the future sample of the input signal.