A two-stage CMOS op amp resembling that in Fig. 12.1 is found to have a slew rate of $60 \mathrm{V} / \mu \mathrm{s}$ and a unity-gain bandwidth $f_{i}$ of $50 \mathrm{MHz}$.
(a) Estimate the value of the overdrive voltage at which the input-stage transistors are operating.
(b) If the first-stage bias current $I=100 \mu \mathrm{A}$, what value of $C_{C}$ must be used?
(c) For a process for which $\mu_{p} C_{a r}=50 \mu \mathrm{A} / \mathrm{V}^{2},$ what $W / L$ ratio applies for $Q_{1}$ and $Q_{2} ?$