13.23 A two-stage CMOS op amp resembling that in Fig. 13.1 is found to have a slew rate of 60 V/µs and a unity-gain bandwidth ft of 60 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 = 120 µA, what value of CC must be used?
(c) For a process for which μpCox = 60 µA/V2, what W/L ratio applies for Q1 and Q2?
(a) 0.16 V; (b) 2 pF; (c) 78.1