Publications 2011 Signal-dependent analog-to-digital conversion based on MINIMAX sampling (MWSCAS)

I.Homjakovs, M.Hashimoto, T.Hirose and T.Onoye, „Signal-dependent analog-to-digital conversion based on MINIMAX sampling”, Proceedings of the IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS), ISSN 1548-3746,  pp. 1 – 4, 2011.


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, and 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.