Give a circuit schematic for a 2-stage op amp with differential inputs and a singleended output with a regulated cascoded p-channel input stage with a tail-current bias and with an n-channel common-source second stage and a tail voltage bias. The op amp is to be externally compensated with a dominant pole on the output of the first stage. b) Give an expression for the dc gain of the op amp of part a) in terms of the small