1.

If g is the transconductance, r is the resistance due to channel length modulation and if M2 and M1 has channel length modulation but M3 doesn’t, what is the total resistance at the drain of M2?

A. {(1 + gr)* R + R} || 2R
B. {(1 + gr)* 3R + 2R} || R
C. {(1 + gr)* (R || 1/g || r) + (R || 1/g || r)} || R
D. Infinite
Answer» D. Infinite


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