The inverting amplifier in the circuit shown has an input resistance of 500 K ? an output resistance of 5 K ?, and an open-loop gain of 300,000. Assume that the amplifier is operating in its linear region.
a) Calculate the voltage gain (vo/vg) of the amplifier.
b) Calculate the value of vn in microvolts when vg = 1V
c) Calculate the resistance seen by the signal source (Vg ).
d) Repeat (a)–(c) using the ideal model for the op amp.
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