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ECE102_F09_C03_MOS_large

ECE102_F09_C03_MOS_large - Check Equations Cutoff 1 2 2 SD...

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1 MOS Field Effect Transistors Basics NMOS PMOS Voltages determine S and D 4-terminal device
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5 n th GS DS V v v - = Channel modulation effect
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6 Operational Modes of NMOS (aspect ratio) (threshold voltage) ( μ n : electron mobility) Check: Equations: Cutoff L W ox ox ox t C ε = n th V ox n n C k = i D i S i G - v GS + + v DS - n th GS V v < 0 = = = D S G i i i
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7 n th GS V v Check: Equations: 0 = G i n th GS DS V v v - < Triode - - = = 2 ) ( 2 DS DS th GS n D S v v V v L W k i i n n th GS DS V v v - n th G D V v v - + - n th G D V v v - n th GS V v i D i S i G - v GS + + v DS - Check: Equations: n th GS V v 0 = G i n th GS DS V v v - Saturation ) 1 ( ) ( 2 2 DS th GS n D S v V v L W k i i n + - = = λ
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8 Operational Modes of PMOS i S i D i G - v SG + + v SD - p p th th SG V V v = - < 0 = = = D S G i i i p p th th SG V V v = - 0 = G i p th SG SD V v v - p th SG SD V v v - p th G D V v v + + - p th G D V v v + p th SG V v Check : Equations : Saturation
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Unformatted text preview: Check: Equations: Cutoff ) 1 ( ) ( 2 2 SD th SG p D S v V v L W k i i p ⋅ + ⋅-⋅ ⋅ ′ = = λ p p th th SG V V v =-≥ = G i p th SG SD V v v-< Check : Equations : Triode -⋅-⋅ ⋅ ′ = = 2 ) ( 2 SD SD th SG p D S v v V v L W k i i p 9 Example: large signal analysis 3 V R m W μ 4 = m L 8 . = = λ V 6 .-= p th V 2 V μA 200 = ⋅ = ′ ox p p C k...
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ECE102_F09_C03_MOS_large - Check Equations Cutoff 1 2 2 SD...

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