Digital-to-analog converter and neuromorphic circuit using such a converter

摘要

The converter has a digital look-up table (LUT) with a selection output to select from a set of transistors (T1-T8), as a function of a word (DATA) to be converted, a transistor or group of transistors supplying current of desired value. A current output (S) supplies current delivered by the selected transistor/transistors. A loading unit loads into the table, at a defined address, a datum determining the selection, as a function of real measured voltage-current characteristics of the transistors, to establish look-up between words to be converted and current values obtained by the selection. The transistors have identical nominal geometrical characteristics and dispersed current-voltage characteristics. An independent claim is also included for a neuromorphic circuit.