9/2/2013 1 Neamen Microelectronics, 4e Chapter 3-1 McGraw-Hill Microelectronics Circuit Analysis and Design Donald A. Neamen Chapter 3 The Field Effect Transistor Neamen Microelectronics, 4e Chapter 3-2 McGraw-Hill In this chapter, we will: Study and understand the operation and characteristics of the various types of MOSFETs. Understand and become familiar with the dc analysis and design techniques of MOSFET circuits. Examine three applications of MOSFET circuits. Investigate current source biasing of MOSFET circuits, such as those used in integrated circuits. Analyze the dc biasing of multistage or multitransistor circuits. Neamen Microelectronics, 4e Chapter 3-3 McGraw-Hill Basic Structure of MOS Capacitor Neamen Microelectronics, 4e Chapter 3-4 McGraw-Hill MOS Capacitor Under Bias: Electric Field and Charge Parallel plate capacitor Negative gate bias: Holes attracted to gate
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9/2/2013
1
Neamen Microelectronics, 4e Chapter 3-1McGraw-Hill
Microelectronics Circuit Analysis and Design
Donald A. Neamen
Chapter 3
The Field Effect Transistor
Neamen Microelectronics, 4e Chapter 3-2McGraw-Hill
In this chapter, we will:
� Study and understand the operation and characteristics of the various types of MOSFETs.
� Understand and become familiar with the dc analysis and design techniques of MOSFET circuits.
� Examine three applications of MOSFET circuits.
� Investigate current source biasing of MOSFET circuits, such as those used in integrated circuits.
� Analyze the dc biasing of multistage or multitransistor circuits.
Neamen Microelectronics, 4e Chapter 3-3McGraw-Hill
Basic Structure of MOS Capacitor
Neamen Microelectronics, 4e Chapter 3-4McGraw-Hill
MOS Capacitor Under Bias:Electric Field and Charge
Parallel plate capacitor
Negative gate bias: Holes attracted to gate
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2
Neamen Microelectronics, 4e Chapter 3-5McGraw-Hill
Schematic of n-Channel Enhancement Mode MOSFET
Neamen Microelectronics, 4e Chapter 3-6McGraw-Hill
Basic Transistor Operation
Before electron
inversion layer is
formed
After electron
inversion layer is
formed
Neamen Microelectronics, 4e Chapter 3-7McGraw-Hill
Current Versus Voltage Characteristics: Enhancement-Mode nMOSFET
Neamen Microelectronics, 4e Chapter 3-8McGraw-Hill
Family of iD Versus vDS Curves:Enhancement-Mode nMOSFET
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3
Neamen Microelectronics, 4e Chapter 3-9McGraw-Hill
p-Channel Enhancement-Mode MOSFET
Neamen Microelectronics, 4e Chapter 3-10McGraw-Hill
Symbols for n-Channel Enhancement-Mode MOSFET
Neamen Microelectronics, 4e Chapter 3-11McGraw-Hill
Symbols for p-Channel Enhancement-Mode MOSFET
Neamen Microelectronics, 4e Chapter 3-12McGraw-Hill
n-Channel Depletion-Mode MOSFET
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Neamen Microelectronics, 4e Chapter 3-13McGraw-Hill
Family of iD Versus vDS Curves:Depletion-Mode nMOSFET
Symbols
Neamen Microelectronics, 4e Chapter 3-14McGraw-Hill
p-Channel Depletion-Mode MOSFET
Symbols
Neamen Microelectronics, 4e Chapter 3-15McGraw-Hill