MidtermExam#2_2008

# MidtermExam#2_2008 - ,I ~; jl ., . . ' )JG v Iv-~--A ' v r...

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Name: -------------- EE 482 - Electronics II Mid-Term Exam #2 Thursday, April 24, 2008 Use only these pages for your calculations and answers. There are 50 total points. Answer all questions. 3 D ~ points) 1.A MOS amplifier is shown below. Use C gs = 100 iF, C gd = 10 iF, k = 200 ~/V2, X = 0, and VA = 20 V for all MOSFETs. All current sources are ideal. 10 V f;c «,', 1 7 \ P- leC+iA n n~fes ((Ii -) oC if1 (Yl(~Fr;:T) iZSi~ 1 cr:-------- I J(Jo)'''i(r l .vp ? (a) Using the open-circuit time constant (OCTC)method, calculate the upper 3-dB frequency (f~ in Hz. Assume that Cc is a dead short for frequencies above fL. You may use/adapt previously-established theoretical results. ¥pts] I /0 r •. i ~ / ~. ,j" 1 1 i!,' X (~~' ) i Page 1 of 3

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Initials: ----- 10 V 10 V (b)Calculate the mid-band gain vol Vsig for the amplifier shown below. ¥ptsj ')0 C c ~ 100 flA -=- 100 flA -10 V -10 V , , 1'./ I ->f r, '1 1/ sa f"!e ( ..f.,.) () '\ 'Vi.-. " II 1\ ~I t l l .- .,",','
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Unformatted text preview: ,I ~; jl ., . . ' )JG v Iv-~--A ' v r 0, Page 2 of 3 Initials: _J_6:_M__ (20 points) 2. An amplifier transfer function is given as: (a) Draw the magnitude response (asymptotic behavior) of T(s). Frequency at break points and slopes must be clearly indicated. Also, indicate the scale on the vertical axis, as well as the value of the highest level. [10 pts} A ",Hi d" oJ: Iwl "'0 i ( Leu 10 4 ~05 1,° 6 ,,10 7 loglwj _ 1C d 2 I / (radl s) d "JjOfG (b)Draw the phase response (asymptotic behavior) of T(s). Frequency at break points and slopes must be clearly indicated. Also, indicate the scale on the vertical axis, as well as the highest and lowest phase values. [10 pts} LTUw) (degrees c ,- It 10 6 10' log Iwl (rad/s)...
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## This note was uploaded on 10/23/2009 for the course EE 482 taught by Professor Bowman during the Spring '07 term at RIT.

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MidtermExam#2_2008 - ,I ~; jl ., . . ' )JG v Iv-~--A ' v r...

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