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Design strategies of cascaded CML gates

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2 Author(s)
Alioto, M. ; DII, Univ. of Siena, Italy ; Palumbo, G.

In this paper, a strategy to design paths consisting of cascaded bipolar current-mode logic gates is proposed. In particular, explicit design criteria are derived both for low-power non-critical paths and high-speed critical paths. The analytical results are simple to be applied to actual circuits avoiding the usual time-consuming approach based on iterative simulations with a trial-and-error procedure. Moreover, it provides the designer with a deeper understanding of the power-delay trade-off. Design examples based on a 20-GHz bipolar process are introduced to validate the procedure and clarify its application.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:53 ,  Issue: 2 )