Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 1 Introduction to Electronic Circuit Design.

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Presentation transcript:

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 1 Introduction to Electronic Circuit Design Richard R. Spencer Mohammed S. Ghausi

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 2 Figure 9-1 One possible model for (a) a real resistor, (b) a real inductor, and (c) a real capacitor. The elements used in the models are ideal resistance, capacitance, and inductance. R s is the series parasitic resistance (caused by the leads), R p is the parallel parasitic resistance, and L s and C p are the parasitic series inductance and parallel capacitance, respectively.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 3 Figure 9-2 A small-signal model for a diode that is valid for high frequencies. r d is present only in forward bias. The value of C depends on the type of diode and whether it is forward or reverse biased; see text for details.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 4 Figure 9-3 (a) The high-frequency hybrid-  model and (b) the high- frequency T model for the generic transistor.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 5 Figure 9-4 The high-frequency hybrid-  model for a BJT. Figure 9-5 The high-frequency T model of a BJT with r b omitted. Figure 9-6 The current-controlled version of the high-frequency hybrid-  BJT model.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 6 Figure 9-7 The high-frequency small-signal models for a MOSFET: (a) in the linear region, (b) the hybrid-  model for forward-active operation (i.e., saturation), and (c) the T model for forward-active operation.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 7 Figure A9-5 An ideal voltage amplifier with a feedback impedance. Figure A9-6 An equivalent circuit.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 8 Figure 9-25 A common-emitter amplifier. (This is the same circuit as in Figure 8-33.)

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 9 Figure 9-26 The small-signal low-frequency AC equivalent circuit for the common-emitter amplifier of Figure Figure 9-27 The circuit of Figure 9-26 with the emitter impedance reflected into the base.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 10 Figure 9-29 The small-signal high-frequency AC equivalent circuit for the amplifier of Figure 9-25.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 11 Figure 9-30 The equivalent circuit from Figure 9-29 after application of Miller’s theorem.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 12 Figure 9-32 (a) The small-signal low-frequency AC equivalent for the common-emitter amplifier of Figure 9-25 and (b) the circuit for finding the short-circuit driving-point resistance seen by C E.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 13 Figure 9-34 The circuit for finding the open- circuit driving-point resistance seen by C .

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 14 Figure 9-35 A common-source amplifier.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 15 Figure 9-36 The small-signal low-frequency AC equivalent circuit for the common-source amplifier of Figure 9-35.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 16 Figure 9-37 Finding R Ss for the circuit in Figure 9-36.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 17 Figure 9-40 The equivalent circuit from Figure 9-39 after application of Miller’s theorem.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 18 Figure 9-43 The circuit for finding the open-circuit driving-point resistance seen by C gd.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 19 Figure 9-46 (a) The small-signal high-frequency AC equivalent for the buffer in Figure (b) After applying Miller’s approximation.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 20 Figure 9-47 Finding the open-circuit driving-point resistance seen by C cm.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 21 Figure 9-59 The small-signal high-frequency AC equivalent circuit for a common-control amplifier stage.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 22 Figure 9-61 The small-signal high-frequency AC equivalent circuit for the amplifier in Figure Figure 9-60 A common-base amplifier.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 23 Figure 9-63 The small-signal high-frequency AC equivalent circuit for the amplifier in Figure Figure 9-62 A common-gate amplifier.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 24 Figure 9-64 A general bipolar single-transistor amplifier.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 25

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 26 Figure 9-65 A general FET single-transistor amplifier.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 27

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 28

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 29 Figure 9-83 A bipolar cascode amplifier.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 30 Figure 9-84 The high-frequency small-signal AC equivalent circuit of the cascode amplifier in Figure 9-83.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 31 Figure 9-86 A MOSFET cascode amplifier.

Spencer/Ghausi, Introduction to Electronic Circuit Design, 1e, ©2003, Pearson Education, Inc. Chapter 9, slide 32 Figure 9-87 The high-frequency small-signal AC equivalent circuit for the amplifier in Figure 9-86.