Ecad sigma - integrating meter for delta conversion

摘要

Ecad sigma - it is the delta conversion system and method. As for this system, analog input signal x (n) with analog feedback signal z (n) with being the input expedient which outputs the deviation signal which displays difference, analog input signal x (n) size the 1st range [-a, +a] is inside the range, input expedient is possessed. Addition expedient is function of integrated value of the aforementioned deviation signal and the signal which adds is output, the aforementioned addition expedient, although instantaneous value that tries does not exceed specified value in order for average strength to increase, converts the integrated value of the aforementioned deviation signal. The description above the digital signal y which displays the signal which adds₀ (n) it outputs quantization expedient. Adaptation expedient digital output signal z₀ (n) outputs the aforementioned digital signal y which is quantized₀ (n) of on the basis, this signal analog feedback signal z (n) is converted by digital analog conversion expedient.