Question: The circuit shown above is a MOS differential amplifier with the drain resistors RD implemented using diode-connected PMOS transistors, M3 and M4. Let M1

The circuit shown above is a MOS differential amplifier with the drain resistors RD implemented using M3 M Vout Vin1 M M2 + Iss VDD Vin2

The circuit shown above is a MOS differential amplifier with the drain resistors RD implemented using diode-connected PMOS transistors, M3 and M4. Let M1 and M2 be matched, and M3 and M4 be matched. If X>0 and gm ro >> 1: (a) Use circuit splitting technique to derive an expression for the differential voltage gain (Ad) (b) Determine the common-mode gain (A_CM) assuming that the tail current source (Iss) is non-ideal so that it has a finite output resistance Rss (parallel with the tail current source) M3 M Vout Vin1 M M2 + Iss VDD Vin2

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