DIGITAL-TO-ANALOGUE CONVERTER Russian patent published in 2013 - IPC H03M1/66 

FIELD: measurement equipment.

SUBSTANCE: digital-to-analogue converter comprises a driving oscillator of pulses, a binary pulse counter, the accumulating input of which is connected to the output of the driving oscillator, a source of reference voltage, a controlled analogue switch, switching the input of the low pass filter, the output of which is the output of the digital-to-analogue converter, between the reference voltage connected to one of the working contacts of the analogue switch, and a zero potential bus connected to the other working contact of the analogue switch, a logical circuit, having 2k inputs and one output, which is connected to the control input of the analogue switch, the first k inputs of the logical circuit are connected to the input information bus of the digital-to-analogue converter, and the second k inputs are connected to discharge outputs of the binary counter, besides, the number k is equal to the number of digits of the converted binary code.

EFFECT: provision of high linearity of conversion characteristic, low pulsation of an output signal and higher efficiency.

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