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EE 332 Lesson 0726

# EE 332 Lesson 0726 - CC AMPLIFIER(FOLLOWER/GAIN VCC R2 Rs...

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7/26/2010 1 ©UW EE TC Chen Microelectronic Circuit Design Jaeger/Blalock EE 332 DEVICES AND CIRCUITS II WEEK 6 ©UW EE TC Chen Microelectronic Circuit Design Jaeger/Blalock CC AMPLIFIER (FOLLOWER)/ GAIN Problem : Find the gain of CC amplifier Given : , , 0.8 , 0.1 , 100 1: 1.5, 100 BE ON CE sat F R A v V V V Q V V 1 2 1 2 10 ; 30 ; 5.1 ; 2.2 ; 1 ; 10 ; 12 ; 10 C E s L CC R k R k R k R k R k R k V V C C F R s v S C1 R 1 R 2 R C R E Q1 C2 V CC R L v o 7 ©UW EE TC Chen Microelectronic Circuit Design Jaeger/Blalock CC AMPLIFIER (FOLLOWER)/ GAIN R s v S C1 R 2 R 1 R C R E Q1 C2 V CC R L v o ANSWER Step 1: DC analysis DC effects on the dash box 4-resistor BJT circuit 8 ©UW EE TC Chen Microelectronic Circuit Design Jaeger/Blalock CC AMPLIFIER (FOLLOWER)/ GAIN R EQ V EQ R C R E Q1 V CC v o ANSWER Assuming BJT operating in forward active mode Theveninizing LHS circuit 1 1 2 1 2 3 ( / / ) 7.5 EQ CC EQ R V V V R R R R R k Solve the loop , , ( 1) 2.3 10.0 ( 1) 7.5 101 2.2 EQ E E BE ON B EQ E B EQ BE ON B EQ E V I R V I R I I V V I A R R k k I C I E I B 9 ©UW EE TC Chen

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