Stakhiv M. The digital functional converters of developable type with improved characteristics

The dissertation is devoted to theoretical generalization and new decision of scientific task, which consists in creation of new structures of digital functional converters of developable type (DFCD), which provide the improvement of accuracy and operating speed that allows creating functional converters with improved metrological characteristics. The analysis of the DFCD construction principles has been conducted, from which follows, that there is necessity in creation of new structures of such devices. It is also necessary to provide the analysis of DFCD characteristics, in particular, the analysis of their conversion errors. On the base of developed criterion there have been found the optimum initial states of circuits structural elements which provide high accuracy conversion of analyzed DFCD. The new FCs structures based on the multi-bit increases principle have been developed, that gives us the possibility to substantially increase the step of integration and, as a result, to improve the operation speed. There has been developed the new FCs structure for the sigmoid function simulation and there has been chosen the optimum initial parameters of circuits structural elements which provide equidistant from a zero value maximal positive and negative absolute errors.