A true single-phase 8-bit adiabatic multiplier

This paper presents the design and evaluation of an 8-bit adiabatic multiplier. Both the multiplier core and its built-in self-test logic have been designed using a true single-phase adiabatic logic family. Energy is supplied to the adiabatic circuitry via a sinusoidal power-clock waveform that is generated on-chip. In HSPICE simulations with post-layout extracted parasitics, our design functions correctly at clock frequencies exceeding 200 MHz. The total dissipation of the multiplier core and self-test circuitry approaches 130 pJ per operation at 200 MHz. Our 11,854-transistor chip has been fabricated in a 0.5 μm standard CMOS process with an active area of 0.470 mm². Correct chip operation has been validated for operating frequencies up to 130 MHz, the limit of our experimental setup. Measured dissipation correlates well with HSPICE simulations.