HW3_sol - 5. Since 1 , L = constant L When L=1um, = 0.02V-1...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
5 5. Since L 1 λ , λ L = constant When L=1um, λ= 0.02V -1 When L’=3um, 00667 . 0 3 02 . 0 1 ' ' = × = = u u L L In this question, we assume the transitor operates in saturation region when V DS =1V. Also, we need to consider the Channel Length Modulation Effect. (a) By () ) 1 ( 2 1 2 DS t GS OX D V V V L W C I μ + = () () () ) ' 1 ( ' 1 ) ' 1 ( 2 1 ) ' 1 ( 2 1 1 2 1 2 2 2 1 2 DS DS DS t GS OX DS t GS OX D D V V V V V L W C V V V L W C I I + + = + + = ) 1 )( 3 / 02 . 0 ( 1 ) 5 )( 3 / 02 . 0 ( 1 80 2 + + = u I D uA I D 1192 . 82 2 = when V DS = 5V (b) % 100 I of change % 1 1 2 D × = D D D I I I % 649 . 2 % 100 80 80 1192 . 82 = × = u u u (c) Since V DS is fixed at 5V, the only way to reduce the percentage change is by increasing L. 1 1 1 1 2 2 1 D D new D D D I I I I I I =
Background image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

HW3_sol - 5. Since 1 , L = constant L When L=1um, = 0.02V-1...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online