Abstract: A design program of a new typical and high speed analog to digital converter is given in this paper so as to meet the requirement of the fast conversion for the multi-channel signal detective system.By converting an analog with it, the decimal digital expression of analog(-9.9999v+9.9999v)is obtained.The binary digital expression can also be obtained.At the same time, the detailed description of the basic principle, the main circuit, the converting speed and accuracy etc.is presented in this paper.