2008
EMSS 2008 Proceeding
Quadratic computational circuits for vlsi designs
Authors: Cosmin Popa
Abstract
There will be presented two important classes of computational circuits, implementing squaring and square-rooting functions. Representing a basis for obtaining all the continuous functions, the previous mentioned functions will be implemented using MOS active devices biased in the saturation region, having the advantage of an important increasing of the circuits? frequency response. For the same reason, a current-mode operation of the circuits will be imposed, the increasing of the computing speed being associated with the independence of the circuits? performance on the technological parameters. Additionally, the VLSI implementation assures a theoretically important speed increasing of the designed circuits. The circuits? complexity will be strongly reduced by replacing classical MOS transistors by FGMOSTs (Floating Gate MOS Transistors), while the proposed design techniques assure a relatively small dependence of the circuits? performances on the second-order effects that affect the MOS transistor operation.
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