Abstract
A four quadrant analog multiplier is proposed in this paper. It is using body-driven MOSFETs operating in subthreshold region. In essence, the subthreshold approach is too susceptible to PVT variations. However, these effects have been intrinsically mitigated by the log/antilog characteristics and enable the realization of current-mode multiplication function in simple and power efficient way at the same time. The multiplier is designed in CMOS 0.18 µm 1P6 M process technology. It occupies an active area of 250 µm2 and consumes 0.698 µW from ± 0.3 V voltage supply. The results are in agreement with the theory under different conditions.
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Acknowledgements
Acknowledgment is due Hadhramout Establishment for Human Development (HEHD), Hadhramout, Yemen. The authors would also like to thank Pavithera Thiyagarajan for her valuable help in simulation and layout.
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An erratum to this article is available at http://dx.doi.org/10.1007/s10470-017-0929-z.
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AL-Tamimi, K.M., EL-Sanakary, K. Body-driven log/antilog PVT compensated analog computational block. Analog Integr Circ Sig Process 90, 693–700 (2017). https://doi.org/10.1007/s10470-016-0909-8
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DOI: https://doi.org/10.1007/s10470-016-0909-8