Design and Analysis of An 10-bit Successive Approximation ADC Based on CMOS Technics

The successive-approximation analog-to-digital converter is widely used because of its eclectic capabilities.In this kind of converter,the speed and precision of comparator and digital-to-analog converter greatly affect the performance of the whole system.Therefore,the design of comparator with offset cancellation technology is the key to the SAR ADC.A comparator used in a 10-bit SAR ADC is designed and presented in this paper.The author describes the architecture of this comparator in detail.