FIELD: digital equipment.
SUBSTANCE: invention relates to analogue-to-digital equipment and can be used in digital values converting devices - codes into proportional analogue values. Digital-analogue converter has constant reference voltage source, resistive array, controlled electronic switches unit and currents summation unit, activation of additional resistors, connected in series to each other, as well as, that two additional resistors common output is connected to additional operational amplifier non-inverting input, its inverting input is connected with existing operational amplifier inverting input, enabled to provide considerable reduction of converter error.
EFFECT: technical result consists in reduced conversion error due to effect of voltage change on operational amplifier inverting input.
1 cl, 1 dwg
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