Response to the following problem:
A current-mirror-loaded MOS differential amplifier is found to have a differential voltage gain Ad of 50 V/V and a CMRR of 60 dB. If the output resistance of the bias current source is 20 Kω and the output resistance of the current-mirror load is 20 kΩ, what is the expected magnitude of the deviation from unity of the current gain of the load mirror?
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