# Ch03p - Chapter 3 Exercise Solutions EX3.1 VTN = 1 V VGS =...

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Chapter 3 Exercise Solutions EX3.1 ( ) 1 , 3 , 4.5 4.5 3 1 2 TN GS DS DS DS GS TN V V V V V V V V sat V V V = = = = > = = = Transistor biased in the saturation region ( ) ( ) 2 2 2 0.8 3 1 0.2 / D n GS TN n n I K V V K K mA V = = = (a) V GS = 2 V, V DS = 4.5 V Saturation region: ( )( ) 2 0.2 2 1 0.2 D D I I mA = = (b) V GS = 3 V, V DS = 1 V Nonsaturation region: ( ) ( )( ) ( ) 2 0.2 2 3 1 1 1 0.6 D D I I mA = = EX3.2 ( ) 2 , 3 3 2 1 TP SG SD SG TP V V V V V sat V V V = − = = + = = (a) 0.5 Nonsaturation SD V V = (b) 2 Saturation SD V V = (c) 5 Saturation SD V V = EX3.3 ( ) ( ) ( ) 2 1 2 2 160 10 3.636 160 280 0.25 3.636 2 0.669 mA G DD GS D R V V V V R R I = = = = + + = = ( )( ) ( )( ) 10 0.669 10 3.31 V 0.669 3.31 2.21 mW DS D DS V P I V = = = = = EX3.4 ( ) ( ) 2 2 1 1 2 2 1.2 0.4 1.2 2.932 V 1 DQ P SG TP SG SG SG DD TTN DD I K V V V V R V V V V R R R = + = = = = + Note K = k Ω ( )( ) 2 2 1 1 1 1 2.932 200 10 682 K 682 200 283 K 682 10 4 5 K 1.2 D R R R R R R = = = = + = = EX3.5 (a) ( ) ( ) 2 1 2 40 10 5 10 5 1 V 40 60 G R V R R = = = − + + ( ) ( ) 2 5 − − = = = S D n GS TN S S G GS V I K V V R V V V

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