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Current-mode fully-programmable piece-wise-linear block for neuro-fuzzy applications

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2 Author(s)
Serrano-Gotarredona, T. ; Nat. Micro-electronics Center, Seville, Spain ; Linares-Barranco, B.

A new method to implement an arbitrary piece-wise-linear characteristic in current mode is presented. Each of the breaking points and each slope is separately controllable. As an example a block that implements an N-shaped piece-wise-linearity has been designed. The N-shaped block operates in the subthreshold region and uses only ten transistors. These characteristics make it especially suitable for large arrays of neuro-fuzzy systems where the number of transistors and power consumption per cell is an important concern. A prototype of this block has been fabricated in a 0.35 μm CMOS technology. The functionality and programmability of this circuit has been verified through experimental results

Published in:

Electronics Letters  (Volume:38 ,  Issue: 20 )