The article presents functional schemes of two IPmodules included into a new (2016) radiation-hardened structured arrays (SA) MH2XA010. The microcircuits of the main modifications of op amps (OAs) with current negative feedback (CNF) can be realized on the base of SA (due to the interconnection wiring of elements). The terminal parameters of op amps are considered, the practical recommendations for choosing the steady-state behaviors, the active and passive elements of SA, providing the peak values of the slew rate and the upper frequency limit of op amp in a wide range of changes of transfer ratios are given. The properties of a new subclass of op amps based on SA MH2XA010 -circuits with the so called generalized current negative feedback, combining the properties of classical op amps with voltage feedback and op amps with CNF are examined.
The article suggests a new method of the errors evaluation from the several common-mode signals in the differential difference operational amplifiers (DDAs), based on the theory of autonomous multiport circuit. These errors of DDA in its main connection circuits can be described by feeding a special current autonomous parameter to the classical equivalent circuit of DDA. This parameter is connected with the highimpedance node of DDA and depends on the level of the common-mode components in the inputs of some input differential stages and also on the parameters spread of the elements.The paper shows that in DDAs the common-mode rejection ratio (CMRR) significantly worsens in comparison with classical op-amp. The parametric and circuitry methods of CMRR increase in the DDAs based on the inherent compensation of parasitic impedances are considered.
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