Low-power electronic circuits which use reversible logic to conserve energy
Adiabatic circuits are low-power electronic circuits which use "reversible logic" to conserve energy.[1] The term "adiabatic" refers to an ideal thermodynamic process in which no heat or mass is exchanged with the surrounding environment, alluding to the ability of the circuits to reduce energy loss as heat.
Unlike traditional CMOS circuits, which dissipate energy during switching, adiabatic circuits reduce dissipation by following two key rules:
Never turn on a transistor when there is a voltage potential between the source and drain.
Never turn off a transistor when current is flowing through it.
Because of the second law of thermodynamics, it is not possible to completely convert energy into useful work. However, the term "adiabatic logic" is used to describe logic families that could theoretically operate without losses. The term "quasi-adiabatic logic" is used to describe logic that operates with a lower power than static CMOS logic, but which still has some theoretical non-adiabatic losses. In both cases, the nomenclature is used to indicate that these systems are capable of operating with substantially less power dissipation than traditional static CMOS circuits.
^Gojman, Benjamin (2004-08-08). "Adiabatic Logic" (PDF). Retrieved 2018-02-08.
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