D 13.70 For the output stage in Fig. 13.30, find the current IREF that results in a quiescent current IQ = 0.6 mA. Assume that I = 12 µA, QN has eight times the area of Q10, and Q7 has four times the area of Q11. What is the minimum current in QN and QP?
10.6 A; minimum current is 0.3 mA