An IC designer is considering the folded-cascode op amp of the type under the following constraints: IBIAS 5 1.2ISS, and all FETS must operate with the same overdrive voltage VOV. The op amp is to have a dc gain of 7,500 V/V and a slew rate of 20 V/s for a 6-pF output load. (a) If n 5 p 5 1y(22 V), fi nd VOV, ISS, and IBIAS (for simplicity ignore the body effect and assume 5 0 in the course of dc calculations). (b) What is the GBP for the given load? (c) What happens if CL is doubled?
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