Transcript Chapter Six

Introduction
to
Electronic Circuit Design
Richard R. Spencer
Mohammed S. Ghausi
Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc.
Chapter 6, slide 1
vO  vI  iD RS

iD  I S evD
nVT
(6.4)

1
(6.5)
Figure 6-3 A nonlinear circuit.
Figure 6-4 Graphical solution of (6.4)
and (6.5) with vI > 0 (vO = vD).
Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc.
Chapter 6, slide 2
Figure 6-7 A close-up of the region around the operating
point in Figure 6-6. The nominal and extreme load lines,
the straight-line approximation, and the Q point (DC
operating point) are also shown. The curve of the diode
characteristic has been exaggerated for illustrative
purposes. The exact value of VD is 689.68 mV, and the
resulting current is 256.7 mA.
Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc.
Chapter 6, slide 3
Figure 6-8 An alternate view of the small-signal approximation.
Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc.
Chapter 6, slide 4
Figure 6-9 The axes for the time-varying components superimposed on the
axes for the total instantaneous quantities.
Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc.
Chapter 6, slide 5
Figure A6-3 A n-type generic transistor. (a)
The schematic symbol, and (b) a model.
Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc.
Chapter 6, slide 6
Figure A6-4 A voltage amplifier using a full two-port model.
Figure A6-5 A voltage amplifier using a unilateral two-port model.
Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc.
Chapter 6, slide 7
Figure 6-17 The four unilateral amplifier models. (a) Voltage, (b) tranresistance,
(c) current, and (d) transconductance.
Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc.
Chapter 6, slide 8
Figure 6-21 (a) An AC-coupled amplifier, (b) the log-magnitude response if
the capacitor is shorted out, and (c) the log-magnitude response if the
capacitor is not shorted out.
Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc.
Chapter 6, slide 9