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# 97ä¸Šé›»å­å­¸ä¸€ç¬¬&aum

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97 學學學學學學學學學學 學學學學學學學學學 1. 1 1 1 2 1 2 1 2 1 2 1 (1) Refer to Fig. 4.47, Since then Q is in saturation. We assume that Q is also in saturation, then because , would be equal to 5 2.5 2 1 1 50 2 G D D D GS GS GS GS V V i i V V V V V I = = = = = = × × 2 3 1 3 4 3 4 3 4 3 1 2 3 1 0 (2.5 1) 562.5 1 2.5 Since Q and Q have the same drain current, then 2.5 This is based on the assumption that Q and Q are saturated. 562 GS GS GS GS GS GS GS GS A V V V V V V V V I I I μ × - = = = = = = = = = 2 3 4 2 1 3 3 3 1 1 2 2 .5 5 2.5 2.5 Now if Q and Q have W=100 1 100 50 (2.5 1) 5625 5.625 2 1 100 or 10 10 562.5 5.625 10 is unchanged 2.5 Q Q Q A V V m I A mA I W I A mA I W V V V = - = = × × × - = = = = = = × = = 2. (a) D GS D G I V I Vs V V 3 5 , 3 , 5 15 5 10 5 - = = = × = + 16 24 9 ) 1 3 5 ( 2 ) ( 2 2 2 1 2 ' 2 1 + - = - - × × = - = D D D D t GS L W n D I I I I V V k I ) ( 1 mA I D = or ) ( 9 16 mA I D = ( 學學 ) ) ( 2 3 5 V V GS = - = and ) ( 5 . 7 5 . 7 15 V V D = - =

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97ä¸Šé›»å­å­¸ä¸€ç¬¬&aum

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