(a) Assuming the inputs of the op amp of are tied together so that vOP 5 vON 5 vOC, show that vOC 5 VOC(set)y(1 11yas ), where as is the gain of the servo loop. (To fi nd as , set vp 5 vn 5 0, break...

(a) Assuming the inputs of the op amp of are tied together so that vOP 5 vON 5 vOC, show that vOC 5 VOC(set)y(1 11yas ), where as is the gain of the servo loop. (To fi nd as , set vp 5 vn 5 0, break M12’s gate connection and ground M12’s gate, break M15’s gate connection and apply a test voltage vtest to M15’s gate, and fi nally obtain as 5 vopyvtest. (b) Suppose the op amp is used in a single-supply system with VDD 5 5 V, VSS 5 0, and VOC(set) 5 2.5 V. Assuming the parameters of along with k12 5 k13 5 k14 5 k15 5 k1, I 5 100 A, and k15 5 k9y1.25, calculate as and, hence, vOC.