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Current sensing differential logic: a CMOS logic for high reliability and flexibility

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3 Author(s)
Joonbae Park ; Seoul Nat. Univ., South Korea ; Jeongho Lee ; Kim, Wonchan

In this paper, we present a highly reliable and flexible CMOS differential logic called current sensing differential logic (CSDL). This CSDL eliminates the timing constraints between the enable signal and input signals, which cause difficulties in design with conventional differential logic families, by employing a simple clocking scheme. The power-delay product of CSDL is also reduced by using a swing suppression technique. To verify the reliability and the applicability of the proposed CSDL in large very large-scale-integration systems, a 64-bit carry-lookahead adder has been fabricated in a 0.6 μm CMOS technology. Experimental results show that the critical path delay is 3.5 ns with a power consumption of 27 mW at 50 MHz

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:34 ,  Issue: 6 )