A Gaussian/square function computation circuit suitable for analog neural networks is proposed. It can realize Gaussian and square functions when operating in weak and strong inversion region, respectively. It is shown that the center, width, and peak amplitude of the dc transfer curve can be controlled separably. Measurement results on 3-/spl mu/m CMOS fabricated chips confirm theoretical and simulation findings.
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Lin et al. (1998) studied this question.
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