True single-phase adiabatic circuitry

Cited 61 time in Web of Science Cited 80 time in Scopus

Kim, Suhwan; Papaefthymiou, Marios C.

Issue Date
Institute of Electrical and Electronics Engineers (IEEE)
IEEE Transactions on Very Large Scale Integration Systems, vol. 9, pp. 52-63
Adiabatic circuitscarry-lookahead adder
Dynamic logic families that rely on energy recovery
to achieve low energy dissipation control the flow of data
through gate cascades using multiphase clocks. Consequently,
they typically use multiple clock generators and can exhibit increased
energy consumption on their clock distribution networks.
Moreover, they are not attractive for high-speed design due to
their high complexity and clock skew management problems. In
this paper, we present TSEL, the first energy-recovering (a.k.a.
adiabatic) logic family that operates with a single-phase sinusoidal
clocking scheme.We also present SCAL, a source-coupled variant
of TSEL with improved supply voltage scalability and energy
efficiency. Optimal performance under any operating conditions
is achieved in SCAL using a tunable current source in each gate.
TSEL and SCAL outperform previous adiabatic logic families in
terms of energy efficiency and operating speed. In layout-based
simulations with 0.5 m standard CMOS process parameters,
8-bit carry-lookahead adders (CLAs) in TSEL and SCAL function
correctly for operating frequencies exceeding 200 MHz. In
comparison with corresponding CLAs in alternative logic styles
that operate at minimum supply voltages, CLAs designed in our
single-phase adiabatic logic families are more energy efficient
across a broad range of operating frequencies. Specifically, for
clock rates ranging from 10 to 200 MHz, our 8-bit SCAL CLAs are
1.5 to 2.5 times more energy efficient than corresponding adders
developed in PAL and 2N2P and 2.0 to 5.0 times less dissipative
than their purely combinational or pipelined CMOS counterparts.
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Journal Papers (저널논문_전기·정보공학부)
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