Successive-approximation type digital-analog converter with feedback advanced setting, and corresponding Delta-Sigma ADC configuration

The invention discloses a successive-approximation type digital-analog converter with feedback advanced setting in a Delta-Sigma ADC configuration. The digital-analog converter is characterized in that the digital-analog converter is used for feeding back an output signal of a quantizer to an output node of a second-stage integrator, thereby completing the non-zero loop delay compensation and noise coupling; the digital-analog converter comprises two DAC capacitor arrays in the same structure; each DAC capacitor array comprises a plurality of capacitors in parallel connection; one end of each capacitor of each DAC capacitor array is connected with a VDD or VSS through an independent switch; the other end of each capacitor in one DAC capacitor array is connected to a link of an input Vinp and the positive input end Vp of a dynamic comparator, and the other end of each capacitor in the other DAC capacitor array is connected to a link of an input Vinn and the negative input end Vn of the dynamic comparator; the