D 13.26 The op-amp circuit of Fig. 13.9 is operated from ±1-V power supplies. If the power dissipated in the circuit is to be limited to 1 mW, find the maximum value of IB allowed. If this value is used, and each of Q1 and Q2 is to be biased at a current four times that used for each of Q3 and Q4, find the value of I, ID1,2, and ID3,4.
D 13.27 For the folded-cascode op amp in Fig. 13.10 u
1 Answer