INTEGRATING VOLTAGE ANALOGUE-TO-DIGITAL CONVERSION METHOD Russian patent published in 2012 - IPC H03M1/52 

FIELD: information technology.

SUBSTANCE: method is based on generating a sequence of conversion time cycles of fixed duration, in each of which three unfolding functions are generated; the informative time interval is selected and converted to a digital code, wherein to generate a first unfolding function from the moment in time corresponding to the beginning of each conversion cycle, the sum of the input voltage and the reference voltage of positive polarity is integrated and the current integral valve is subtracted from the positive threshold voltage; in order to generate a second unfolding function, the sum of the input voltage and the reference voltage of negative polarity is integrated and from the moment in time corresponding to the equality of values of the unfolding functions, the value of the unfolding function is recorded, which is equal to the value of the positive threshold voltage, and to generate a second unfolding function, the sum of the input voltage and the reference voltage of positive polarity is integrated, from the moment in time corresponding to the middle of each cycle of fixed duration a third unfolding function is generated via integration of the sum of the input voltage and the reference voltage of negative polarity and summation with the negative threshold voltage of the current integral value, and from the moment in time corresponding to equality of values of the second and third unfolding functions, the value of the third unfolding function is recorded, which is equal to the value of the negative threshold voltage; the duration of informative time intervals is defined as the difference between time intervals for integrating reference voltages of positive and negative polarity, respectively.

EFFECT: faster operation.

4 dwg