ECE242 Lecture Notes - Lecture 1: Virginia State Route 10, Horse Length

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Ic = 0. 5 ma, ro = 100 k . Ic = 0. 25 ma, ro = 200 k . Ic = 1. 0 ma, ro = 50 k . Ic = 2. 0 ma, ro = 25 k vi. Determine amplifier biasing (cid:149) assume input signal = 0 (cid:149) if unknown, assume vo = 0. +10 v gm = ic/vt = 10 ma/v ro = va/ic = 200 k r = vt/ib = 10 k vi. 4. 6 k gm = ic/vt = 40 ma/v. Rout >> 50 k r = vt/ib = 2. 5 k vo2. Q4 gm = 80 ma/v ro = 25 k r = 1. 25 k re = 12. 5 vo. 4. 6k re = 25 gm3v 3 gm3 = 40 ma/v gm1 = gm2 = 10 ma/v gm1v s1 ro1 gm2v 2 ro2 v 2 vi. 488 vo vo2 ro4//25k //rl re4+ ro4//25k //rl vo vi vo1. Note the effect of a finite rl on the gain of stage 2.

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