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The article suggests an evaluation method of offset voltage of BiJFet differential difference operational amplifiers (DDAs), based on the theory of autonomous multiport circuit. The static error of DDA, connected with the offset voltage (Vio), can be presented by the current autonomous parameter Ip connected with the highimpedance node, entered into its classical equivalent circuit. The parameter...
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...
The architectures of the operational amplifiers (OA), implemented on the basis on bipolar and field (JFET) transistors, are offered. Their feature — the use of transistors operating on different physical principles, precision in the input circuits of differential stages (DS). This allows you to set a static DS mode due to the choice of the geometric dimensions of field-effect transistors and to exclude...
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