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13.24 Use the result of Example 13.5 and Exercises 13.20 and 13.23, and assume M = 0.0055 to determine Gmcm and CMRR of the 741 input stage. What would the CMRR be if the common-mode feedback were not present? Assume βP = 50.
Gmcm = 1.13 × 10−6 mA/V; CMRR = 1.68 × 105 or 104.5 dB; without common-mode feedback, CMRR = 70.5 dB
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