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Compact CMOS-Compatible Majority Gate Using Body Biasing in FDSOI Technology

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This is the first work that employs the body biasing feature, available in fully depleted silicon on insulator (FDSOI) technology nodes, to build CMOS-compatible compact majority (MAJ) and minority (MIN)… Click to show full abstract

This is the first work that employs the body biasing feature, available in fully depleted silicon on insulator (FDSOI) technology nodes, to build CMOS-compatible compact majority (MAJ) and minority (MIN) logic gates. Compared to their CMOS counterpart, our novel MAJ/MIN gates exhibit considerably fewer transistors, $\boldsymbol {2.3} \times $ and $\boldsymbol {2} \times $ , respectively. The use of MAJ/MIN gates for logic synthesis has been widely investigated in the literature since any function can be realized using only these two gates. Nevertheless, the use of MAJ/MIN gates to synthesize circuits remained very limited because such gates are area hungry when implemented using conventional standard cells. Therefore, state-of-the-art research in the last decade has extensively focused on exploring beyond-CMOS technologies to build alternative MAJ/MIN gates. However, such emerging technologies are still immature and suffering considerably from variability. On the other hand, our novel FDSOI-based MAJ/MIN gates are based on mature CMOS commercial technologies. Our analysis of the proposed gates has been conducted using accurate SPICE simulations with an industry-compact transistor model, BSIM-IMG, calibrated for an industrial 14nm FDSOI technology. Using our developed MAJ/ MIN synthesis and error injection framework called MAJinBoo, we demonstrate that MAJ/MIN-based circuits exhibit an outstanding resiliency against errors due to the inherent voting-based computing. This encourages the employment of our MAJ/MIN gates in safety-critical applications where reliability is a prime concern. Our MAJinBoo framework is available at https://github.com/Brunno815/MAJinBoo.

Keywords: min gates; maj min; fdsoi technology; min

Journal Title: IEEE Journal on Emerging and Selected Topics in Circuits and Systems
Year Published: 2023

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