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0.5 V Universal Filter Based on Multiple-Input FDDAs

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Abstract

This brief presents a universal filter based on multiple-input fully differential difference amplifier (FDDA) that is suitable for extremely low-power low-voltage applications. The filter employs three FDDAs, eight resistors, four capacitors and can provide low-pass, band-pass, high-pass, band-stop and all-pass voltage responses. Thanks to the utilization of the multiple-input MOS transistor technique, one differential pair with an arbitrary number of inputs is required for constructing the FDDA. Therefore, unlike the previously published FDDA-based universal filters, the proposed filter has the simplest CMOS structure with less power consumption than those already published in the literature. The filter operates with 0.5 V, consumes 740 nW and exhibits rail-to-rail input common mode range. The dynamic range of the BP filter is 73 dB for 1% third intermodulation distortion. The circuit was designed in Cadence/Spectre environment using the TSMC 0.18 µm CMOS process design kit, and the simulation results confirm the advantages of the proposed filter.

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Acknowledgements

The research described in this paper was financed by the National Sustainability Program under Grant LO1401. For the research, infrastructure of the SIX Center was used.

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Authors and Affiliations

  1. Department of Microelectronics, Brno University of Technology, Technicka 10, Brno, Czech Republic

    Fabian Khateb

  2. Faculty of Biomedical Engineering, Czech Technical University in Prague, nám. Sítná 3105, Kladno, Czech Republic

    Fabian Khateb

  3. Department of Telecommunications Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand

    Montree Kumngern

  4. Department of Electrical Engineering, Technical University of Częstochowa, 42-201, Czestochowa, Poland

    Tomasz Kulej

  5. Department of Physics, Electronics Laboratory, University of Patras, 26504, Patras, Greece

    Costas Psychalinos

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  1. Fabian Khateb
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  2. Montree Kumngern
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  3. Tomasz Kulej
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  4. Costas Psychalinos
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Correspondence to Fabian Khateb.

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Khateb, F., Kumngern, M., Kulej, T. et al. 0.5 V Universal Filter Based on Multiple-Input FDDAs. Circuits Syst Signal Process 38, 5896–5907 (2019). https://doi.org/10.1007/s00034-019-01147-5

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  • DOI: https://doi.org/10.1007/s00034-019-01147-5

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