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  4. 2. (30%) Figure 1 shows a four-stage bipolar op-am..

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【非選題】
2. (30%) Figure 1 shows a four-stage bipolar op-amp circuit. If all transistors are operating in the active n with the same B = 100, and VT= 25mV.(1) Please perform an approximate dc analysis PoEl =0.7 V, and neglecting the Early effect) to calculate the quiescent power dissipation in this cireuit, (2) What is the input common mode voltage range of this op-amp? (3) Calculate the voltage gain of the first stage and (4) the overall voltage gain. (5%, 5%, 5%, 15%)