Title :
Ultralow-power adiabatic circuit semi-custom design
Author :
Blotti, Antonio ; Saletti, Roberto
Author_Institution :
Dipt. di Ingegneria dell´´Informazione: Elettronica, Univ. of Pisa, Italy
Abstract :
This brief shows that a conventional semi-custom design-flow based on a positive feedback adiabatic logic (PFAL) cell library allows any VLSI designer to design and verify complex adiabatic systems (e.g., arithmetic units) in a short time and easy way, thus, enjoying the energy reduction benefits of adiabatic logic. A family of semi-custom PFAL carry lookahead adders and parallel multipliers were designed in a 0.6-/spl mu/m CMOS technology and verified. Post-layout simulations show that semi-custom adiabatic arithmetic units can save energy a factor 17 at 10 MHz and about 7 at 100 MHz, as compared to a logically equivalent static CMOS implementation. The energy saving obtained is also better if compared to other custom adiabatic circuit realizations and maintains high values (3/spl divide/6) even when the losses in power-clock generation are considered.
Keywords :
CMOS integrated circuits; CMOS logic circuits; VLSI; application specific integrated circuits; circuit feedback; circuit simulation; integrated circuit layout; low-power electronics; 0.6 micron; 10 MHz; 100 MHz; CMOS technology; VLSI designer; carry lookahead adders; complex adiabatic systems; energy reduction; energy saving; parallel multipliers; positive feedback adiabatic logic; post layout simulations; power clock generation; semicustom adiabatic arithmetic units; semicustom design; static CMOS implementation; ultralow power adiabatic circuit design; Adders; Arithmetic; CMOS logic circuits; CMOS technology; Circuit simulation; Feedback; Libraries; Logic design; Power generation; Very large scale integration; Adiabatic circuit; computer arithmetic; dynamic-logic circuit; low power dissipation; low-power design; power-consumption model;
Journal_Title :
Very Large Scale Integration (VLSI) Systems, IEEE Transactions on
DOI :
10.1109/TVLSI.2004.836320
