(a) A student is characterizing the folded-cascode op amp of using an oscilloscope. If loading the output node with a capacitance CL5 3 pF causes SR to drop from 60 V/s to 24 V/s, fi nd the...

(a) A student is characterizing the folded-cascode op amp of using an oscilloscope. If loading the output node with a capacitance CL5 3 pF causes SR to drop from 60 V/s to 24 V/s, fi nd the differential input pair’s bias current ISS as well as the stray output-node capacitance Co. (b) If loading the output with a resistance RL 5 10 MV causes the dc gain a0 to drop from 5000 V/V to 2500 V/V, fi nd the output resistance Ro. (c) Find the overdrive voltage VOV of the differential-pair transistors, the corner frequency fb, and the GBP for the unloaded case. (d) Find a0, GBP, and SR if the amplifi er is loaded with CL 5 2 pF. (e) Repeat part (d), but for the case of a load RL 5 15 MV. (f) Repeat part (d), but for the case in which the 2-pF and 15-MV loads are present simultaneously.