A method of increasing the stability of the zero level analog circuits based on the “Folded” cascode with the high-impedance point branch in the terms of temperature and radiation effects

Abstract

It is considered the problem of synthesis of structural and schematics of bipolar analog ICs based on the classic “folded” cascode which have a small zero-level (offset voltage, Vov) and its drift in the terms of temperature and radiation effects. Thus the basis of the modernization of the scheme are adopted by well-known basic analog IC (operational amplifiers, continuous stabilizers, voltage comparators, etc.), in which by the rules set forth below, we introduce some structural redundancy, which provides a decrease Vov and its voltage drift effect on one or two orders).