If the CA3140 op-amp is biased at (V^{+}=15 mathrm{~V}) and (V^{-}=-15 mathrm{~V}), determine the input common-mode voltage

Question:

If the CA3140 op-amp is biased at $V^{+}=15 \mathrm{~V}$ and $V^{-}=-15 \mathrm{~V}$, determine the input common-mode voltage range. Assume B-E voltages of $0.6 \mathrm{~V}$ for the bipolar transistors and $\left|V_{T P}\right|=1.4 \mathrm{~V}$ for the MOSFETs.

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