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# HW5_10 - ECE2280 Homework#5 mework Spring 2010 1 Use...

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ECE2280 Homew 1. Use: g m =100mA/V for the circuit b (a) Derive the complete transfer funct (b) Find the low 3db frequency value, 2. (a) Draw the hybrid- π circuit (b) Find the gain I o V V (V I is an (c) Find Rin (node to right of c (d) Find Rout (node to left of c Given: I D =1mA and the trans V t =2V k n ’(W/L)=2mA/V 2 1 work #5 below. Vsig is an AC signal source. tion for Vo/Vsig. (Treat the capacitors as an imp , f L expressed in Hz for Vo/Vsig. n AC source) capacitor to ground) capacitor to ground) sistor is saturated Vdd=+12V RG1 RG RG2 -9 ~ R in 2M 2M 1k V I Vo Spring 2010 pedence) Rd RS RL R out 4k 9V + V o 12k λ =0 4k

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2 3. Use the circuit below for problems 3 and 4. V I is an AC voltage source. Use V t =2V, k n ’(W/L)=3mA/V 2 , λ =0, R G =10 Ω, R G1 =2M Ω, R G2 =2M Ω, Rd=100 Ω, RS=1k Ω, R L =10k Ω. Find the DC values for I D , I S , I G , V G , V D , V S . 4. Use an AC model to find the value for the gain A v = I o V V , R in and R out . Use the circuit below for problems 5 and 6.
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HW5_10 - ECE2280 Homework#5 mework Spring 2010 1 Use...

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