Subthreshold Schmitt trigger using body-bias technique for ultra low power and high performance applications |
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Authors: | Vandana Niranjan Maneesha Gupta Nupur Pzakash |
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Affiliation: | 1.Deptt. of Electronics and Communication Engineering, Kashmere Gate,Indira Gandhi Institute of Technology,Delhi,India;2.Netaji Subhash Institute of Technology Deptt. of Electronics and Communication Engineering,Dwarka, Delhi,India |
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Abstract: | Digital subthreshold logic provides extremely low power consumption since the power supplies are kept below the threshold
voltage and using the small subthreshold current of MOS transistors to operate. In this paper, a body-bias technique to match
the subthreshold currents of both the NMOS and PMOS transistors is explored and a Schmitt trigger circuit employing this bias
technique is proposed. Extensive circuit simulations were conducted and the results were compared with standard body bias
technique in terms of performance parameters. The simulation results were obtained with 0.18 μm technology parameters. The
conclusion is that Schmitt trigger with this body biasing is suitable for high performance and ultra low power applications. |
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