Importance

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Abstract

An A/D converter includes a comparator configured to compare an input voltage and a reference signal changing monotonically with respect to time and output a comparison result signal indicating a comparison result, a pulse signal generation circuit configured to generate a pulse signal in accordance with the comparison result signal, a counting unit configured to receive a first clock signal, and to count the first clock signal from a start of changing a level of the reference signal to when a level of the comparison result signal is changed, and a latch unit configured to latch the pulse signal at a timing which is defined by a plurality of clock signals including a second clock signal in phase with the first clock signal and a third clock signal having a different phase from that of the second clock signal.

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First Claim