a. Find fT for a MOSFET operating at ID = 200 μA and VoV = 0.3 V. The

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a. Find fT for a MOSFET operating at ID = 200 μA and VoV = 0.3 V. The MOSFET has Cgs = 25 fF and Cgd = 5 fF. b. A particular BJT operating at IC = 0.5 mA has Cμ = 1 pF, Cπ = 8 pF, and β = 100. What is fT for this situation? c. A particular small BJT has fT of 10 GHz and Cμ = 0.1 pF when operated at IC = 1.0 mA. What is Cπ in this situation?

a. Find fT for a MOSFET operating at ID = 200 μA and VoV = 0.3 V. The MOSFET has Cgs = 25 fF and Cgd = 5 fF. b. A particular BJT operating at IC = 0.5 mA has Cμ = 1 pF, Cπ = 8 pF, and β = 100. What is fT for this situation? c. A particular small BJT has fT of 10 GHz and Cμ = 0.1 pF when operated at IC = 1.0 mA. What is Cπ in this situation?

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a. Find

f_{T}

for a MOSFET operating at

I_{D} = 200 μ A

and

V_{o V} = 0.3 V

. The MOSFET has

C_{g s} = 25 f F

and

C_{g d} = 5 f F

. b. A particular BJT operating at

I_{C} = 0.5 m A

has

C_{μ} = 1 p F, C_{π} = 8 p F

, and

β = 100

. What is

f_{T}

for this situation? c. A particular small BJT has

f_{T}

of

10 G H z

and

C_{μ} = 0.1 p F

when operated at

I_{C} = 1.0 m A

. What is

C_{π}

in this situation?

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