High temperature sensor application specific integrated circuit（ ASIC） has wide application prospects in some special fields of energy

aerospace

and heavy industry. The reason which causes circuit performance degradation and out of work is given in outline. The necessity of high temperature sensor ASIC is elaborated. The domestic and international research status is introduced. Major technologies and design tactics are given. The trend of development is analyzed. The reasons which cause chip failure in high temperature application are summed

and some sane proposals are put forward combined with process compatible.