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The design features of low-temperature radiation-hardened instrumentation amplifiers and sensor interfaces

The article gives a theoretical analysis of the generalized structure of precision instrumentation amplifiers (IA) of modern interfaces for sensor and diagnostic systems of robots and unmanned aerial vehicles (UAV), which operate, among others, on exposure to radiation and low temperatures. The main disadvantages of classical IA are determined from the common positions and the possible ways of their clearing are presented. The new architecture of radiation-hardened differential difference op-amp (DDA) based on "folded" cascode is developed for the application in sensor interfaces and its simulation results are given, taking into account the effect of disturbing factors.