Lecture 10. ANNOUNCEMENTS Alan Wu will hold an extra lab session tomorrow (9/28), 2-4PM The post-lab assignment for Experiment #4 has been shortened! 2 pgs of notes (double-sided, 8.5”×11”) allowed for Midterm #1. OUTLINE BJT Amplifiers (cont’d) CB stage with biasing
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Reading: Chapter 5.3.3-5.4
Choose RE >> 1/gm , i.e.ICRE >> VT
VCC = 2.5V
IS = 5x10-16 A
b = 100
VA = ∞
Design a CB stage for Av = 10 and Rin = 50W.
Choose RE = 500W
and I1 >> IB, e.g.I1 = 52mA
R1 appears in parallel with RC; the circuit simplifies to a simple CB stage with source resistance.