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Current-tunable current-mode RMS detector

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Abstract

A new realization of root mean square (RMS) detector comprising two controlled current conveyors, metal-oxide-semiconductor transistors and a single grounded capacitor is presented in this paper, without any external resistors and components matching requirements added. The proposed circuit can be used for measuring the RMS value of periodic, band-limited signals. Inherently, the circuit is well suited for IC implementation. The errors related to signal processing and errors bound were investigated and provided. To verify the theoretical analysis, the circuit PSpice simulations have also been included, showing good agreement with the theory. The maximum power consumption of the converter is \(\sim \)4.28 mW, at \(\pm \)1.25 V supply voltages.

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Acknowledgments

The author wishes to thank to the Ministry of Education and Science of the Republic of Serbia for its support of this work provided within the projects 42009 and OI-172057.

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Authors and Affiliations

  1. Faculty of Technical Sciences Čačak, University of Kragujevac, Svetog Save 65, 32000, Čačak, Serbia

    Predrag B. Petrović

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  1. Predrag B. Petrović
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Correspondence to Predrag B. Petrović.

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Petrović, P.B. Current-tunable current-mode RMS detector. Electr Eng 97, 65–74 (2015). https://doi.org/10.1007/s00202-014-0313-2

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