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# HW7 - 14.8(a Neglecting R out Av = Avt Avt =(0.005S(2000 =...

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14.8 a ( 29 Neglecting R out : A vt = - g m R L 1 + g m R S = - 0.005 S ( 2000 ( 1 + 0.005 S ( 29 330 ( 29 = - 3.77 A v = A vt R G R I + R G = -3.77 2 M 75 k Ω + 2 M = -3.64 | R in = R G = 2 M R out = r o 1 + g m R S ( 29 = 10 k 1 + 0.005 S ( 29 330 ( 29 [ ] = 26.5 k 2 k A i = - R G g m 1 + g m R S = - 2 M 0.005 S 1 + 0.005 S ( 29 330 ( 29 = - 3770 b ( 29 A v = - g m R L r o ( 29 R G R I + R G = - 0.005 S ( 29 2 k 10 k ( 29 2 M 75 k Ω + 2 M = - 8.03 R in = R G = 2 M | R out = r o = 10.0 k | A i = - R G g m = - 2 M 0.005 S ( 29 = - 10000 14.9

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a ( 29 g m = 0.02 S | r π = 75 .02 = 3750 R in = R B r π + β o + 1 ( 29 R E [ ] = 15 k 3750 Ω + 76 300 ( 29 [ ] = 9.58 k Neglecting R out : A v = A vt R in R I + R in = - β o R L r π + β o + 1 ( 29 R E R in R I + R in A v = - 75 12 k ( 29 3750 Ω + 76 300 ( 29 9.58 k 500 Ω + 9.58 k = - 32.2 R out 2245 r o 1 + β o R E R th + r π + R E = 100 k 1 + 75 300 ( 29 15 k 500 ( 29 + 3750 Ω+ 300 = 596 k 12 k A i = - β o R B R B + r π + β o + 1 ( 29 R E = - 75 15 k 15 k Ω + 3750 Ω+ 76 300 ( 29 = - 27.1 b ( 29 g m = 0.02 S | r π = 75 .02 = 3750 R in = R B r π + β o + 1 ( 29 R E [ ] = 15 k 3750 Ω + 76 620 ( 29 [ ] = 11.6 k Neglecting R out : A v = A vt R in R I + R in
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