Assume the gain stage of the CA3140op–ampis modified to indude an emitter resistor, as shown in Figure 13.23. Let λ= 0.02 V–1 for M10.Assum all other transistor parameters are the same as those in Example13.13. If the transistor bias currents In M10 and Q12 are 100µA and the current in Q13 is 200 µA,determine the new value of the small–signal differential voltage gain of the input stage.
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