Problem 1
The gm1= gm2= 120 μS. Assume R1= R2= R3= 1 K
. C1= 100 pF and neglect all other capacitors. Channel length modulation parameter
= 0.
(a) Identify the type of feedback
(b)Discuss what happens to input/output impedances before and after feedback is applied
(c)Estimate the numerical values closed-loop voltage gain for very low frequencies and very high frequencies
(d)Discuss the steps you have taken to arrive at the answers.
Problem 2
The gm1= gm2= gm3= gm4= 120 μS. Assume R1= R2= 1 K
. Channel length modulation parameter = 0.
(a) Identify the type of feedback
(b)Discuss what happens to input/output impedances beforeand after feedback is applied
(c) Estimate thenumerical valuesofthe closed-loop voltage gain and output impedance
(d)Discuss the steps you have taken to arrive at the answers.
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