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| caption3 = Previously established successive-approximation ADC example setup where an input voltage of 9.4V is provided, is illustrated in the figure.
}}The successive approximation ADC can be alternatively explained by first uniformly assigning each digital output to corresponding ranges as shown. It can be seen that the algorithm essentially divides the voltage range into two regions and checks which of the two regions the input voltage belongs to. Successive steps involve taking the identified region from before and further dividing the region into two and continuing identification. This occurs until all possible choice of digital representations are exhausted, leaving behind an identified region which corresponds to only one of the digital representation. The range of the analog input that each digital output corresponds to, will depend on the number of digits used to represent the total input range.
===Variants===
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