Revisit the exact analysis of the inverting configuration in section 4.3.

(a) Find an expression for the gain if R in = ∞, R out = 0, A o ≠ ∞.

(b) Plot the ratio of the gain in (a) to the ideal gain versus Ao for 1 ≤ Ao ≤ 1000 for an ideal gain of – 10.

(c) From your plot, does the actual gain approach the ideal value as Ao increases or decreases?

(d) From your plot, what is the minimum value of Ao if the actual gain is within 5% of the ideal case?