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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 | |