ECE351-HW2-S

# ECE351-HW2-S - ECE 351 HW1 Problem 1 Swing:= 4 volt Tol:=...

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ECE 351 HW1 Problem 1 Swing 4 volt := Gain 150 := R S 750 Ω := Tol 0.05 := β min 50 := β max 350 := V BE 0.7 volt := V EE 15 volt := V CC 15 volt := V T 25.8 mV := V CEsat 0.3 volt := Choose a standard value for R C R C 3.9 k Ω := R Cmax R C 1 Tol + () := R Cmin R C 1 Tol := Calculate Max Ic from the swing I Cmax V CC Swing V CEsat V BE + R Cmax := I Cmax 2.784 mA = Calculate min IC from the gain

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I Cmin_g 2 Gain V T R Cmin := I Cmin_g 2.089 mA = Calculate the min IC from the swing I Cmin_s Swing R Cmin := I Cmin_s 1.08 mA = The larger of the two min specifications is the most restrictive I Cmin max I Cmin_s I Cmin_g , () := I Cmin 2.089 mA = Choose a value of collector current between the max and min. I C 2.7 mA := I Cmax 2.784 mA = I Cmin 2.089 mA = Calculate the amplifier properties using the given current source and include r π . g m I C V T := g m 0.105 1 Ω =
r π min β min g m := r π min 0.478 k Ω = Gain min g m R Cmin r π min R S r π min + := Gain min 150.882 = r π max β max g m := r π max 3.344 k Ω = Gain max g m R Cmin r π max R S r π max +

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ECE351-HW2-S - ECE 351 HW1 Problem 1 Swing:= 4 volt Tol:=...

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