申論題

3.  A current-mirror-loaded MOS differential amplifier of the type shown in Fig. 4 is specified as follows: = 100, = 200, = 2 = 0.2 mA/V², = 20 V, and I = 0.8 mA. 

(b) Let the output resistance of current source is 25 kΩ. Calculate common-mode gain 620 and CMRR (in dB).