new_amplfiiers_2002

new_amplfiiers_2002 - Single stage amplifier crib sheet,...

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Unformatted text preview: Single stage amplifier crib sheet, page 1 Basics: Amplifiers at Low Frequencies B E C R π or Rbe Ro or Rce gm*Vbe +- Vbe G S D Ro or Rds gm*Vgs +- Vgs Left is the equivalent circuit of a bipolar transistor; e T E m r V I g / 1 / = = , q kT V T / = , m be g r r / β π = = . C CE A ce I V V R / ) ( + = . On the right is the FET model. g ox sat m W c v g = (short-gate / velocity saturation model), D DS ds I V R / ] ) / 1 [( + = λ Rb Ree Rcc Rin,emitter Rin, collector Rin,base For the bipolar ( ) ( ) EE e base in R r R + + = 1 , β + + ≈ + + + = 1 1 , β β B e ce cc ce B e emitter in R r r R r R r R { } EE m ce B EE be be EE m ce collector in R g r R R r r R g r R + ≈ + + + = 1 1 , Rgg Rss Rdd Rin,source Rin, drain Rin,gate For the fet: THE EQUATIONS ARE THE SAME IF ß is INFINITE!...
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This note was uploaded on 08/06/2008 for the course ECE 137AB taught by Professor Rodwell during the Winter '08 term at UCSB.

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new_amplfiiers_2002 - Single stage amplifier crib sheet,...

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