DIGITAL-TO-ANALOGUE CONVERTER Russian patent published in 2020 - IPC H03M1/66 

FIELD: electronic equipment.

SUBSTANCE: group of inventions relates to digital-to-analogue converters and can be used in devices for converting a digital code into an analogue voltage. In one version, the device comprises transformers with primary and secondary windings, reference voltage source and switches, wherein transformers have transformation coefficients corresponding to 2^N-1, where N is serial number of digit of corresponding transformer code, to one ends of primary windings of transformers are connected operational amplifiers, and to the other earthing, wherein the inputs of the operational amplifiers are connected to keys configured to switch the inputs of the operational amplifiers to the reference voltage source or grounding in accordance with the digit value of the digit, secondary windings of transformers are combined into a common circuit, which is connected on one side to the earthing, and to the output terminal on the other side.

EFFECT: high accuracy of digital-to-analog conversion, as well as reducing the number and range of used electronic elements.

8 cl, 3 dwg