POWER EFFICIENT ADIABATIC SWITCHING CIRCUITS

This paper deals with design opportunities of CMOS based reversible logic circuits employing adiabatic switching methods. The power dissipation an important characteristics are tested by means of SPICE circuit simulation techniques for a CMOS transmission gate based reversible logic circuits, such as Controlled Not gates & Controlled Controlled Not gate. Results from both conventional and adiabatic logic switching simulations are compared. The breakdown of adiabatic operation for these reversible circuits, due to the finite threshold voltages, is tested by checking the logic circuit node current/voltage transient waveform during the logic switching transitions. On the basis of simulation results conclusion has been derived that the performance of reversible logic circuits employing adiabatic switching is better than conventional switching in terms of a factor-power dissipation.