L13 Part 2 CC_CE Open Ckt Time Constants_1_1

L13 Part 2 CC_CE Open Ckt Time Constants_1_1 - EE 311 &...

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Unformatted text preview: EE 311 & EEO 311 L13 Part 2 6.11 CE-CC Two-Stage Amp Open-Circuit Time Constants Zubair Rehman 2 (1) General Case: T 10 = R 10 C T 20 = R 20 C R b , R e and R c are equivalent resistances which take into account input and/or output resistances of adjacent stages. (1) Special Case CE R e = 0 (1) Special Case CC R c = 0 (1) Special Case CB R b = 0 Summary of Open-Circuit Time Constants - BJT [ ] [ ] e x b e x b C e x b e m e b x R r r R R r R r R R r r R R R g R R r r R 1 29 + + + + + + 1 29( + + + 1 29 + + + = + + + = ( ) ( * ( || 1 || 20 10 [ ] [ ] e x b e m e x b R r r R R R g R r R r R 129 + + + = + + + = ( || 1 || 20 10 e x e x c e x e m e x R r r R r r R R r r R R g R r r R ) ( ) ( * ] ( [ || 1 || 20 10 1 + + + + 1 29( + + + 1 29 + + = + + = ) 1 ( ) ( || 10 10 20 10 R g R R R r R r R m c x b + + = + = 3 Q 1 R e , R b , R c Q 2 R e , R b , R c Q1 R e1 = 0 R b1 = R12 || R11 || R sig = 50 R c1 = RC1 || R in2 Rin2 = ( 2...
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L13 Part 2 CC_CE Open Ckt Time Constants_1_1 - EE 311 &...

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