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

(a) Find an expression for the gain if R i n = ∞ , R o u t = 0 , and A o ≠ ∞ .

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

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

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