The two circuits shown in Fig. P9.20 realize a first-order, low-pass transfer function from Vi to Vo. Assume the opamps are ideal and noiseless. a. Show that the two circuits have the same...

The two circuits shown in Fig. P9.20 realize a first-order, low-pass transfer function from Vi to Vo. Assume the opamps are ideal and noiseless.

a. Show that the two circuits have the same input–output transfer function.

b. Estimate the total output noise for circuit I, using only dominant noise sources. c. Repeat (b) for circuit II.