Signal-Dependent Analog-to-Digital Conversion based on MINIMAX Sampling (集積回路)
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概要
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This paper presents an architecture of signal-dependent analog-to-digital converter (ADC) based on MINIMAX sampling scheme that allows achieving high data compression rate and power reduction. The proposed architecture consists of a conventional synchronous ADC, a timer and a peak detector. AD conversion is carried out only when input signal peaks are detected. To improve the accuracy of signal reconstruction, MINIMAX sampling is improved so that multiple points are captured for each peak, and its effectiveness is experimentally confirmed. In addition, power reduction, which is the primary advantage of the proposed signal-dependent ADC, is analytically discussed and then validated with circuit simulations.
- 2011-12-08
著者
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ONOYE Takao
Dept. of Information Systems Eng., Osaka University
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Hirose Tetsuya
Dept. Of Electrical And Electronics Engineering Kobe University
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Hashimoto Masanori
Dept. Of Information Systems Engineering Osaka University
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Onoye Takao
Dept. Of Information Systems Engineering Osaka University
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HOMJAKOVS Igors
Dept. of Information Systems Engineering, Osaka University
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Homjakovs Igors
Dept. Of Information Systems Engineering Osaka University
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