Adc based on sigmaDelta modulator

The utility model provides an adc structure of higher precision mainly comprises first time delay integrator, the first clock comparator, first decimator, second decimator, second time delay integrator, second clock comparator, first adder, second adder and third adder, can reach the analog -to -digital conversion of higher precision, realizes very fast conversion rate simultaneously under the circumstances that does not increase the digital process complexity. 本实用新型提供了种较高精度的模数转换器结构，主要由第延时积分器、第时钟比较器、第抽取器、第二抽取器、第二延时积分器、第二时钟比较器、第加法器、第二加法器以及第三加法器组成，可以达到较高精度的模数转换，同时在不增加数字处理复杂度的情况下实现较快的转换速度。