Analog to digital converter selecting reference voltages in accordance with feedback from prior stages

摘要: An A/D converter includes first to N th stages of conversion units, which are connected in series, each unit converting an analog input signal into a digital output signal. Each the units a) sample-and-hold circuit, holds signal; b) selector selects one from plurality reference voltage signals accordance with outputted stage preceding unit; and c) comparator compares supplied circuit selected by selector.