The differential amplifier in Figure 11.20 is to be redesigned. The current- source biasing is to be replaced with the cascode current source in Figure 11.24. The reference current is IREf = 100 μA and λ for transistors in the current source circuit is 0.01 V−1. The parameters of the differential pair M1 and M2 are the same as described in Example 11.8. The range of the common-mode input voltage is to be −4 ≤ vcm ≤ +4 V. Redesign the diff-amp to achieve the highest possible differential-mode voltage gain. Determine the values of Ad,Acm, and CMRRdB
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