Chapter14

Microelectronic Circuit Design

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CHAPTER 14 14.1 (a) Common-collector Amplifier (npn) (emitter-follower) R E Q 1 R 1 R 2 R 3 + - v o R I v i (b) Not a useful circuit because the signal is injected into the drain of the transistor. R 3 + - M 1 R D v i R I v o R 1 (c) Common-emitter Amplifier (pnp) 1 k R C + - R 3 100 k Q 1 R 1 R 2 R I v i v o © R. C. Jaeger & T. N. Blalock - February 20, 2007 14-1
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14.1 (d) Common-source Amplifier (NMOS) + - R 3 1 k R D 470 k M 1 R 2 R 1 v i R I v o (e) Common-gate Amplifier (PMOS) R 1 R 3 R D + - M 1 v i R I v o (f) Common-collector Amplifier (emitter-follower) (npn) R 1 Q 1 R E R 2 R 3 + - v o R I v i 14-2 © R. C. Jaeger & T. N. Blalock - February 20, 2007
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14.1 (h) Common-base Amplifier (pnp) R C R E Q 1 R 3 + - R I v i v o (i) Not a useful circuit since the signal is being taken out of the base terminal. R E Q 1 R B R 3 + - R I v i v o (j) Common-source Amplifier (PMOS) 1 k R D + - R 3 470 k M 1 R 2 R 1 R I v i v o © R. C. Jaeger & T. N. Blalock - February 20, 2007 14-3
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14.1 (k) Common-gate Amplifier (Depletion-mode NMOS) R 3 R D + - R I v i v o R S M 1 (l) Not a useful circuit because the signal is injected into the drain of the transistor. R 3 + - v o M 1 R D v i R I R S (n) Common-emitter Amplifier (npn) R B Q 1 R 3 + - v i R I v o (o) Common-drain Amplifier (Source-follower) (NMOS) R G M R 3 + - v i R I v o 14-4 © R. C. Jaeger & T. N. Blalock - February 20, 2007
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14.2 v o v i R I R S R G R D C B C C2 1k R L 100 k -V SS V DD C C1 + - 14.3 R I v i R S C C1 C C2 R G R D C B V DD -V SS R L 1k 100 k v o + - 14.4 R I v i R S -V SS R G R D C B R L 100 k C C1 C C2 V DD 1k v o + - © R. C. Jaeger & T. N. Blalock - February 20, 2007 14-5
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14.5 +15 V 220 k 15 k -15 V 150 k 22 k + - v O v I R I 3.3 k R E R B R C R L C C1 C C2 C B Q 1 14.6 (a) +15 V 220 k 15 k -15 V 150 k 22 k + - v O v I R I 3.3 k R E R B R C R L C C1 C C2 C B Q 1 (b) +15 V 220 k -15 V 150 k 22 k + - v O v I R I 3.3 k R E R B R L C C1 C C2 Q 1 14.7 (a) +15 V 220 k 15 k -15 V 3.3 k 150 k 22 k + - v O R E R B R C R L C C1 C C2 C B v I R I Q 1 (b) +15 V 15 k -15 V 3.3 k 150 k 22 k + - v O R E R C R L C C1 C C2 v I R I Q 1 14-6 © R. C. Jaeger & T. N. Blalock - February 20, 2007
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14.8 a () Neglecting R out : A vt =− g m R L 1 + g m R S 0.005 S ( ) 2000 ( ) 1 + 0.005 S 330 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 = 10 k 1 + 0.005 S 330 [] = 26.5 k Ω>> 2 k A i R G g m 1 + g m R S 2 M 0.005 S 1 + 0.005 S 330 3770 b A v g m R L r o R G R I + R G 0.005 S 2 k 10 k 2 M 75 k 2 M 8.03 R in = R G = M R out = r o = 10.0 k A i R G g m 2 M 0.005 S 10000 © R. C. Jaeger & T. N. Blalock - February 20, 2007 14-7
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14.9 a () g m = 0.02 S | r π = 75 .02 = 3750 R in = R B r + β o + 1 R E [] = 15 k 3750 Ω+ 76 300 = 9.58 k Neglecting R out : A v = A vt R in R I + R in =− o R L r + o + 1 R E R in R I + R in A v 75 12 k 3750 76 300 9.58 k 500 9.58 k 32.2 R out r o 1 + o R E R th + r + R E = 100 k 1 + 75 300 15 k 500 + 3750 300 = 596 k Ω>> 12 k A i o R B R B + r + o + 1 R E 75 15 k 15 k 3750 76 300 27.1 b g m = 0.02 S r = 75 .02 = 3750 R in = R B r + o + 1 R E = 15 k 3750 76 620 = 11.6 k
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This note was uploaded on 03/05/2008 for the course EE 307 taught by Professor Braun during the Spring '08 term at Cal Poly.

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Chapter14 - CHAPTER 14 14.1 (a) Common-collector Amplifier...

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