Consider the BiCMOS input stage of the CA3140 op-amp in Figure 13.21. Transistor \(Q_{5}\) can be replaced with a constant-current source of \(200 \mu \mathrm{A}\). Assume: bipolar transistor parameters of \(\beta=200, I_{E O}=10^{-14} \mathrm{~A}\), and \(V_{A}=50 \mathrm{~V}\); and MOSFET parameters of \(K_{p}=0.6 \mathrm{~mA} / \mathrm{V}^{2},\left|V_{T P}\right|=1 \mathrm{~V}\), and \(\lambda=0.01 \mathrm{~V}^{-1}\). Using an appropriate ac load at the collector of \(Q_{12}\), determine the differential gain of the input stage. Compare the computer analysis results with those in Example 13.12.

Data From Example 13.12:-

Figure 13.21:-

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Determine the currents and voltages in the bias circuit of the CA3140 op-amp. Consider the bias circuit in Figure 13.22, with parameters: V+ = 15 V, V = -15 V, and R = 8 k2. Assume transistor parameters of VBE (npn) = VEB (pnp) = 0.6 V for the bipolars, and Kp = 0.2 mA/V2 and |VTP|= 1.4 V for the MOSFET M8.