FIELD: digital, analog-to-digital, and special-purpose devices and computers. SUBSTANCE: converter has two reference-voltage units, three comparators, gain setting unit, operational amplifier, coordinate origin setting unit, origin offset unit for input, reference-voltage selecting unit, two AND gates, EXCLUSIVE OR gate, and reversible counter. Converter implements desired functional dependence by reproducing n independent approximating sections. Design versions of functional converter are proposed including those for reproducing unipolar output voltage. EFFECT: reduced size and improved accuracy. 6 cl, 4 dwg
