We wish to design a folded-cascode op amp of the type of under the constraints that IBIAS 5 1.25ISS and that all FETs have the same overdrive voltage VOV. The op amp is to have a dc gain of 8,000 V/V,...

We wish to design a folded-cascode op amp of the type of under the constraints that IBIAS 5 1.25ISS and that all FETs have the same overdrive voltage VOV. The op amp is to have a dc gain of 8,000 V/V, and when terminated on an 8-pF external load, its gain-bandwidth product must be 16 MHz. (a) If n 5 p 5 0.05 V21 , fi nd VOV, ISS, IBIAS, and SR (for simplicity ignore the body effect and assume 5 0 in the course of dc calculations). (b) If the biasing circuit has IREF 5 IBIAS and the entire op amp is powered from 62.5-V supplies, what is its power dissipation?