In the bias portion of the CA1340 op-amp in Figure 13.22, the bipolar transistor parameters are VBE(npn) = 0.6V and VEB(pnp) = 0.6V and the MOSFET parameters are VTP = -1.2 V and Kp = 0.15 mA/V2. (a) Determine the currents I1 =I2 h- (b) If the bias voltages are V+ ≡ Vs determine the minimum value of Vs such that the bias currents are independent of the supply voltage.
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