A modular analog system for function approximation is presented. It is based on the multiquadric approach and allows to program the weight, the sharpness and the position in the input domain of the basis functions. The basic cell has been designed and manufactured using standard, double-metal single-poly, CMOS 1.6um technology: the size is 312*160um^2 and the measured power consumption is below 1.4mW using a single 5V power supply. The measured characteristic for different values of the programmable parameters are presented.
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