Integrated circuit implementation of multi-dimensional piecewise-linear functions

Authors:
Martin Di Federico;Tomaso Poggi;Pedro Julián;Marco Storace
Affiliations:
Universidad Nacional del Sur, Av. Alem 1353, Bahía Blanca, Argentina;University of Genoa, Biophysical and Electronic Engineering Department, Via Opera Pia 11a, I-16145 Genova, Italy;Universidad Nacional del Sur, Av. Alem 1353, Bahía Blanca, Argentina;University of Genoa, Biophysical and Electronic Engineering Department, Via Opera Pia 11a, I-16145 Genova, Italy
Venue:
Digital Signal Processing
Year:
2010

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Abstract

In this paper we present an integrated circuit implementing piecewise-linear (PWL) functions with three inputs, where each input can be either analog or digital. The PWL function to be implemented can be chosen by properly storing a set of coefficients in a 4 kB external memory. Experimental results are shown that demonstrate the circuit working up to 50 MHz with a maximum power consumption of 3.7 mW. Measurements corresponding to both static and time-varying inputs are provided and discussed.