| 摘要 |
An analog to digital converter comprises: first to nth comparators, having a tandem structure, for comparing an input voltage signal with first to nth reference voltages and outputting first to nth bit outputs respectively, said n being a natural number more than one, said first comparator outputting a most significant bit of said first bit output; a first reference voltage generation circuit for generating said first reference voltage; second to nth reference voltage generation circuits for generating said second to nth reference voltages, pth reference voltages being generated in accordance with outputs of said first to (p-1)th comparators, said p being a natural number and l<p<n.
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