EE3110-AEC-2008-Monolithis Circuit Techniques

EE3110-AEC-2008-Monolithis Circuit Techniques - +-= -=-= 2...

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EE3110: Analogue Electronic  Circuits Monolithic Circuit Techniques
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5. Monolithic Circuit Techniques 1. Current Mirrors Rashid: ch11 V + V - I R E F Q 1 Q 2 R 1 I C 1 I O I B 1 I B 2 1 R V V V I BE REF - - = - + + + + = β 2 1 2 2 1 1 C B B C REF I I I I I 2 1 2 + = = REF O C I I I O A o O I V r R : resistance Output =
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1. Three Transistor Current Source V + V - I R E F Q 1 Q 2 Q 3 R 1 I C 1 I O I B 1 I B 2 I B 3 ( 29 + + + + = 3 2 3 3 1 1 2 1 1 β C E C REF I I I I ( 29 3 2 1 2 1 + + = = REF O C I I I A better approximation for I O    I REF  
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1. Wilson Current Source V + V - I R E F Q 1 Q 2 Q 3 R 1 I C 1 I O I B 1 I B 2 I B 3 ( 29 β + + = = 1 2 1 3 REF O C I I I 2 3 o O r R : resistance Output
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1. Widler Current Source V + V - I R E F Q 1 Q 2 R E R 1 I C 1 I O I B 1 I B 2 T BE T BE V V S C O V V S C REF e I I I and e I I I / 2 / 1 2 1 = = = = - = = O REF T BE BE S O T BE S REF T BE I I V V V I I V V I I V V ln ln ln 2 1 2 1 = = - O REF T E O E O E E BE BE I I V R I R I R I V V But ln : 2 2 1 ( 29 2 ' ' 2 2 // , 1 , π r R R where R g r R Also E E E m o O = +
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1. Some FET Equivalents V + V - I R E F M 1 M 2 M 3 I O V G S 1 V G S 2 V G S 3 V + V - I R E F M 1 M 2 M 3 I O V G S 1 V G S 2 V G S 3 2-MOSFET current source  MOSFET Wilson current source  V D S I O JFET current source 
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1. Active Loads V + I R E F Q 1 Q 2 Q 0 R 1 I C 1 I C 2 I C 0 V O V I V O V I V + I R E F M 1 M 2 M 0 I O I 2 V S G ( 29 + - =
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Unformatted text preview: +-= -=-= 2 2 2 2 1 1 1 1 1 1 // // A A T A A O m O A O A m o o m v V V V V V I g I V I V g r r g A 1. Differential Amplifier V + V-Q 1 Q 2 Q 3 Q 4 V O 2 R 1 R 2 R 3 V O 1 V I 1 V I 2 1. Level Shifter using a current source V + V-Q 1 Q 2 Q 3 R 1 R 2 V O V I 1 R I V V V O BE I O--= Tutorial: Monolithic Techniques Review questions : 1-3, 5-7. 1 Basic current source E13.1 P13.1, 13.2 2 Modified E13.2 P13.3, 13.4 3 Widlar E13.3 P13.6, 13.7, 13.8 4 Wilson E13.4 P13.9, 13.10, 13.11...
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EE3110-AEC-2008-Monolithis Circuit Techniques - +-= -=-= 2...

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