| 摘要 |
PROBLEM TO BE SOLVED: To provide an analog/digital converter that has reduced power consumption and attains high-speed sampling by employing a sigma-delta converter operated at a double sampling speed. SOLUTION: The analog/digital conversion is performed by busing at least two sigma-delta converters 50, 52 in a cascade connection and the sigma-delta converters 50, 52 are operated at a double sampling speed.
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