PPT - CMOS Digital Logic Circuits Electrical Engineering (EE) Notes | EduRev

Digital Electronics

Electrical Engineering (EE) : PPT - CMOS Digital Logic Circuits Electrical Engineering (EE) Notes | EduRev

 Page 1


Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
CMOS Digital Logic Circuits
Page 2


Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
CMOS Digital Logic Circuits
Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
Introduction
§ IN THIS CHAPTER YOU WILL LEARN
§ How the operation of the basic element in digital
circuits, the logic inverter, is characterized by such
parameters as noise margins, propagation delay, and
power dissipaption, and how it is implemented by
using one of the three possible arangements of
voltage-controlled swicthes (transistors).
§ That the three most significant metrics in digital IC
design are speed, power dissipation, and area.
Page 3


Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
CMOS Digital Logic Circuits
Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
Introduction
§ IN THIS CHAPTER YOU WILL LEARN
§ How the operation of the basic element in digital
circuits, the logic inverter, is characterized by such
parameters as noise margins, propagation delay, and
power dissipaption, and how it is implemented by
using one of the three possible arangements of
voltage-controlled swicthes (transistors).
§ That the three most significant metrics in digital IC
design are speed, power dissipation, and area.
Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
Introduction
§ IN THIS CHAPTER YOU WILL LEARN
§ How and why CMOS has become the dominant
technology for digital IC design.
§ The structure, circuit operation, static and dynamic
performance analysis, and the design of the CMOS
inverter.
§ The synthesis and design optimization of CMOS logic
circuits.
§ The implications of technology scaling (Moore’s Law).
Page 4


Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
CMOS Digital Logic Circuits
Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
Introduction
§ IN THIS CHAPTER YOU WILL LEARN
§ How the operation of the basic element in digital
circuits, the logic inverter, is characterized by such
parameters as noise margins, propagation delay, and
power dissipaption, and how it is implemented by
using one of the three possible arangements of
voltage-controlled swicthes (transistors).
§ That the three most significant metrics in digital IC
design are speed, power dissipation, and area.
Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
Introduction
§ IN THIS CHAPTER YOU WILL LEARN
§ How and why CMOS has become the dominant
technology for digital IC design.
§ The structure, circuit operation, static and dynamic
performance analysis, and the design of the CMOS
inverter.
§ The synthesis and design optimization of CMOS logic
circuits.
§ The implications of technology scaling (Moore’s Law).
Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
Digital Logic
Inverters
§ Most basic element in design of digital circuits.
§ Plays a role parallel to the amplifier in analog circuits.
§ 13.1.1. Function of the Inverter
§ Convert 0 to 1, 1 to 0.
§ 13.1.2. Voltage Transfer Characteristics (VTC)
§ Described in Figure 13.3.
Page 5


Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
CMOS Digital Logic Circuits
Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
Introduction
§ IN THIS CHAPTER YOU WILL LEARN
§ How the operation of the basic element in digital
circuits, the logic inverter, is characterized by such
parameters as noise margins, propagation delay, and
power dissipaption, and how it is implemented by
using one of the three possible arangements of
voltage-controlled swicthes (transistors).
§ That the three most significant metrics in digital IC
design are speed, power dissipation, and area.
Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
Introduction
§ IN THIS CHAPTER YOU WILL LEARN
§ How and why CMOS has become the dominant
technology for digital IC design.
§ The structure, circuit operation, static and dynamic
performance analysis, and the design of the CMOS
inverter.
§ The synthesis and design optimization of CMOS logic
circuits.
§ The implications of technology scaling (Moore’s Law).
Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
Digital Logic
Inverters
§ Most basic element in design of digital circuits.
§ Plays a role parallel to the amplifier in analog circuits.
§ 13.1.1. Function of the Inverter
§ Convert 0 to 1, 1 to 0.
§ 13.1.2. Voltage Transfer Characteristics (VTC)
§ Described in Figure 13.3.
Oxford University Publishing
Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith (0195323033)
Voltage-Transfer
Charactristic (VTC)
§ Figure 13.2. demonstrates utilization of transistor as
logic inverter.
§ logic = 1: v
o
=V
DD
, logic = 0:v
I
=V
DD
§ To utilize transistor-based amplifier as an inverter,
extreme regions of operation are employed.
§ V
iL
is maximum valuev
I
can have while being interpreted
as logic 0.
§ V
iH
is minimum valuev
I
can have while being interpreted
as logic 1.
Read More
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