ANALOG/DIGITAL CONVERTER AND METHOD FOR CONVERTING ANALOG SIGNALS TO DIGITAL SIGNALS
外国特許コード | F130007291 |
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整理番号 | EF001P01 |
掲載日 | 2013年4月11日 |
出願国 | 世界知的所有権機関(WIPO) |
国際出願番号 | 2012JP072786 |
国際公開番号 | WO 2013/042548 |
国際出願日 | 平成24年9月6日(2012.9.6) |
国際公開日 | 平成25年3月28日(2013.3.28) |
優先権データ |
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発明の名称 (英語) | ANALOG/DIGITAL CONVERTER AND METHOD FOR CONVERTING ANALOG SIGNALS TO DIGITAL SIGNALS |
発明の概要(英語) |
The objective of the invention is to provide an A/D converter that exhibits fewer malfunctions due to variations in manufacturing. An A/D converter (1) of the invention, which is a cyclic type of analog/digital converter for converting an analog input signal to a digital signal having a predetermined resolution, comprises: a digital approximation unit (10) that includes a comparing unit (13) for comparing the magnitude of an input first analog signal with a threshold value to output a digital value indicating a result of the comparison and that also includes an MDAC unit (14) for amplifying the first analog signal to beta-fold, where beta is greater than one but smaller than two, and for executing a predetermined computation in accordance with the result of the comparison of the comparing unit to output a second analog signal a multiplexer (20) that, if the MSB is to be computed, outputs the analog input signal and, otherwise, outputs the second analog signal as the first analog signal a beta estimating unit (30) that estimates the value of beta and a digital signal outputting unit (40) that sequentially takes in digital values outputted by the comparing unit and that outputs the taken-in digital values as the digital signal. |
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国際特許分類(IPC) | |
参考情報 (研究プロジェクト等) | FIRST Mathematical Theory for Modeling Complex Systems and its Transdisciplinary Applications in Science and Technology AREA |
日本語項目の表示
発明の名称 | アナログーデジタル変換器及びアナログ信号をデジタル信号に変換する方法 |
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