Ideal op-amp parameters: magnification differential mode, differential mode input resistance, common mode rejection ratio, maximum frequency are infinite; input offset voltage and drift, drift and input offset current and noise are zero.

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　　Results in the use process in the instrument measuring appliance to be able to involve to the measuring range results in the question. In order to obtain the fixed voltage to result in the output, must change the operational amplifier to result in the enlargement factor. For example: When some ope

　Ideal operational amplifier parameters: differential magnification, differential mode input resistance, common-mode rejection ratio, upper frequencies are infinite, the input offset voltage and drift, input offset current and temperature drift and noise are both zero.

　Ideal operational amplifier parameters: differential magnification, differential mode input resistance, common-mode rejection ratio, upper frequencies are infinite, the input offset voltage and drift, input offset current and temperature drift and noise are both zero.