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3.1 Consider a device with gm = 7 mmho, Cin = 10.5 pF, Cout = 1.5 pF, and Cf = 0. a If you wanted a fast step response, how many devices would you cascade for a voltage gain magnitude of 400 ? b. If you cascaded three of these devices for a gain magnitude of 1000 , what would you estimate as the minimum rise time for the circuit? c. If we add Cf = 0.5 pF to the device described above we have a circuit for an RCA 40841 MOSFET. What is Elmore's rise time for Vout /VS in the circuit below? ANS: 12, 74.4 ns, 13.5 ns

3.1 Consider a device with gm = 7 mmho, Cin = 10.5 pF, Cout = 1.5 pF, and Cf = 0. a If you wanted a fast step response, how many devices would you cascade for a voltage gain magnitude of 400 ? b. If you cascaded three of these devices for a gain magnitude of 1000 , what would you estimate as the minimum rise time for the circuit? c. If we add Cf = 0.5 pF to the device described above we have a circuit for an RCA 40841 MOSFET. What is Elmore's rise time for Vout /VS in the circuit below? ANS: 12, 74.4 ns, 13.5 ns

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3.1 Consider a device with g m = 7 m m h o , C i n = 10.5 p F , C out = 1.5 p F , and C f = 0 . a If you wanted a fast step response, how many devices would you cascade for a voltage gain magnitude of 400 ? b. If you cascaded three of these devices for a gain magnitude of 1000 , what would you estimate as the minimum rise time for the circuit? c. If we add C f = 0.5 p F to the device described above we have a circuit for an RCA 40841 MOSFET. What is Elmore's rise time for V out / V S in the circuit below? ANS: 12 , 74.4 n s , 13.5 n s

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