# NMOS Digital Circuits. Introduction Static NMOS circuits Dynamic NMOS circuits

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 NMOS Digital Circuits Introduction Static NMOS circuits Dynamic NMOS circuits

2 Introduction PMOS and NMOS families are based on MOS transistors with induced channel of p, respectively n NMOS circuits mostly used for switching (higher speed) Circuits are using exclusively NMOS transistors One positive power supply Logic levels are function of power supply voltage level

3 Static NMOS inverter Transistor T 1 acts as an inverter T 2 acts as active load, replacing the static resistor MOS technology use transistors as playing resistor role T 1 is based on n channel, in enhancement mode; T 2 works in depletion mode It means: T 1 threshold voltage positive and T 2 being negative External load is normally also NMOS inputs, so there is a huge input resistance and the load has mainly a capacitance meaning

4 Transfer Characteristic Area a, V i < V T1, T1 is off, I DS1 = 0, V o = V DD, T 2 works in linear regime Area b, V i > V T1, T2 works in linear region. V DS1 > V GS1 - V T1, T 1 saturated. For T 2 being in linear region, 0 <= V DS2 <= V GS2 - V T2, where V GS2 =0, and V DS2 = V DD -V o, therefore V o must be higher than V DD + V T2, making at input: Area c V i = V T1 (1 + 2) V T1 < Vi < VT + T2 saturated T1 saturated for: 1(1 2) V DD 2 V DD V o 4 2 Here transfer characteristic is linear and abrupt Area d, T 1 off saturation and enter linear regime; T 1 goes off saturation for: V i 2 DD V 16 1 V 0 V + 8 DD V + 4 0

5 Threshold Voltage Function of supply voltage for the basic substrate and the doping index Usually the substrate terminal is tied together with the source terminal, in most of cases tied to ground Sometimes there is a voltage substratesource, allowing a control (adjustment) of the threshold voltage

6 V = V DD RS + R R 0 T1 T1 For V DD = 15V, V o = 0,5V Load resistance Built using a transistor: T 2 Gate connected to V GG T 1 on, for having V o very close to zero, R T2 >>R T1 : W W 1 2 / L / L 1 2 >> 1 R T1 has values: 0,5 up to 10KΩ If R T1 =10KΩ then R T2 =250KΩ=R s If T 1 off, V o = V GG - V T2, for V o being approx. V DD, must: V GG = V DD + V T

7 Static NAND Gate T 1 and T 2 connected serially, the logic inputs are applied on their gates circuits T 3 load resistance For making better output voltage levels, mainly the low level very close to 0V, the active resistance must be much greater (20 times) the passing resistance of the input transistors Not recommended to serially connect too many input transistors, because the load resistance would become too important and the switching times would grow, demaging the gate s dynamic behavior If at both inputs applied V IH = V DD, T 1 & T 2 on, V o 0V If at least, one input has V IL = 0V, corresponding transistor(s) goes off and V o V DD F = AB

8 Static NOR Gate T 1 & T 2 connected in parallel, their gates are the input circuits T 3 acts as load resistance Connecting input transistors in parallel doesn t affect the load resistance, so the number of circuit inputs isn t bounded by dynamic considerations If both inputs have: V IL = 0V, T 1 & T 2 off, V o V DD If applying at least at one input V IH = V DD, that input transistor is on, V o 0V F = A + B

9 Implementing logic function Using the serial and parallel MOS transistors connections, complex logic functions may be implemented, with a simple structure of the integrated circuit; see behind

10 Static AND, OR & XOR Gates AND & OR gates are built up by inversing the signal from the output of NAND, respectively NOR gates, using an extra inverter, made with transistors T 4 -T 5 For XOR gate: V o = 0 for two cases: if T 1 & T 2 are on (A & B inputs both 1 ) or if T 5 & T 6 off (A & B inputs both 0 ) (in this case in the gate of T 4 there is a voltage approx. V DD making the transistor on

11 Dynamic NMOS circuits A basic method to store (memorise) the logic values is to use the input capacitances of the MOS transistors A capacitance with no stored charge (discharged) is said to represent a logic 0, respectively a charged capacitance is said to represent a logic "1 Signals are applied in the gate circuit, from one capacitor to the other, using transistors driven in conduction by special driving signals (command pulses) Operate in a small dissipation power regime Dynamic MOS circuits offer a better integration density than the static ones Transistors performace doesn t depend on their geometry Drawback: more driving (command) signals, more logic

12 Dynamic NMOS Inverter Inverter built up from transistors Q1 & Q2, together with capacitance C1 Output circuit made from transistor Q 3 and storage capacity C 2 There are clock signals: V p1, applied on Q 2 gate, sampling input value V in, then inverted by Q 1 and stored (memorised) by C 1 V p2, applied on Q 3 gate, making it open and copying the stored charge from C 1 to C 2

13 Dynamic NMOS Inverter Example of operation: t=t 0, V in = 0, apply pulse V p1 : Q 1 off, Q 2 on and from V DD charges C 1 t=t 1, apply pulse V p2, Q 3 goes on, charge from C 1 is transmitted on C 2 If C 1 >> C 2, transfer of charge is without important losses, and on C 2 there will be a potential corresponding to logic 1 t 2 < t < t 3, V in = 1, Q 1 on, C 1 loses charge through Q 1 t=t 4, pulse V p2, Q 3 open, C 1 without charge, so will become C 2, so output logic 0 For this inverter, the output response is delayed with t 1 - t 0 or t 4 - t 2 Pulses V p need to be applied periodically, achieving the refresh of the information stored on parasitic capacitances A minimum refresh frequency must be designed, to keep right information on capacitances, which otherwise discharge through existing open junctions

14 Low-power dynamic NMOS inverter Input circuit built using Q 1 şi C 1, transistor driven by V p1 A V p1 pulse makes input transfer on C 1 and in the same time keeps capacitance C 2 at a potential equivalent with the inverted input information Input circuit consumes from power supply only on V p1 driving signal for input transistor

15 NAND & NOR Dynamic NMOS gates Dynamic NAND gate Dynamic NOR gate Logic function implemented similar way as of the static gates Operation is similar with that described for dynamic inverter

16 Dynamic AND-OR-NOT Gate Circuit operates synchronously, gate response triggered at output by pulse V p2 For pulse V p1, logic levels from A, B, and C inputs are stored on capacitances from the gates of transistors T 5, T 4, T 6 (which mean the basic gate structure) Transistors with logic '1' inputs will be on, and those with logic '0' will be off Pulse V p2, makest 7 open (gate s load active resistance) Output Y depends on the global state of transistors T 4, T 5, T 6 Y= 0 if T 6 is on, or T 4 and T 5 are both on Y = A* B + C

### Fig. 1 CMOS Transistor Circuits (a) Inverter Out = NOT In, (b) NOR-gate C = NOT (A or B)

Introduction to Transistor-Level Logic Circuits Prawat Nagvajara At the transistor level of logic circuits, transistors operate as switches with the logic variables controlling the open or closed state

### Chapter 10 Advanced CMOS Circuits

Transmission Gates Chapter 10 Advanced CMOS Circuits NMOS Transmission Gate The active pull-up inverter circuit leads one to thinking about alternate uses of NMOS devices. Consider the circuit shown in

### CMOS Logic Integrated Circuits

CMOS Logic Integrated Circuits Introduction CMOS Inverter Parameters of CMOS circuits Circuits for protection Output stage for CMOS circuits Buffering circuits Introduction Symetrical and complementary

### NMOS Inverter. MOSFET Digital Circuits. Chapter 16. NMOS Inverter. MOSFET Digital Circuits

Chapter 16 MOSFET Digital Circuits In the late 70s as the era of LSI and VLSI began, NMOS became the fabrication technology of choice. Later the design flexibility and other advantages of the CMOS were

### Here we introduced (1) basic circuit for logic and (2)recent nano-devices, and presented (3) some practical issues on nano-devices.

Outline Here we introduced () basic circuit for logic and (2)recent nano-devices, and presented (3) some practical issues on nano-devices. Circuit Logic Gate A logic gate is an elemantary building block

### Pass-Transistor Logic. Topics. NMOS-Only Logic. Pass-Transistor Logic. Resistance of Transmission Gate. Pass-Transistor Logic.

Topics Transmission Gate Pass-transistor Logic 3 March 2009 1 3 March 2009 2 NMOS-Only Logic Example: AND Gate 3 March 2009 3 3 March 2009 4 Resistance of Transmission Gate XOR 3 March 2009 5 3 March 2009

### 4. CMOS Transistor Theory

4. CMOS Transistor Theory 1 4. CMOS Transistor Theory Jacob Abraham Department of Electrical and Computer Engineering The University of Texas at Austin VLSI Design Fall 2016 September 7, 2016 ECE Department,

### CMOS Digital Circuits

CMOS Digital Circuits Types of Digital Circuits Combinational The value of the outputs at any time t depends only on the combination of the values applied at the inputs at time t (the system has no memory)

### Metal oxide semiconductor field effect transistor (MOSFET) or MOS is widely used for implementing digital designs

The MOSFET Introduction Metal oxide semiconductor field effect transistor (MOSFET) or MOS is widely used for implementing digital designs Assets: High integration density and relatively simple manufacturing

### Lecture 3: MOS Transistors Switch and Gate Logic

Lecture 3: MOS Transistors Switch and Gate Logic Mark Horowitz Modified by Azita Emami Computer Systems Laboratory Stanford University azita@stanford.edu MAH, AEN EE271 Lecture 3 1 Overview Reading W&E

### CMOS Digital Integrated Circuits Analysis and Design

CMOS Digital Integrated Circuits nalysis and Design Chapter 7 Combinational MOS Logic Circuits 1 Introduction Combination logic circuit Performing Boolean operations between input and put Static and dynamic

### Outline. Power and Energy Dynamic Power Static Power. 4th Ed.

Lecture 7: Power Outline Power and Energy Dynamic Power Static Power 2 Power and Energy Power is drawn from a voltage source attached to the V DD pin(s) of a chip. Instantaneous Power: Energy: Average

### MOSFET transistor I-V characteristics

MOSFET transistor I-V characteristics Linear region: v DS «v GS Triode region: v DS < v GS i D = K[ 2( v GS )v DS ] 2 i D = K[ 2( v GS )v DS v DS ] K n K = = C ox µ n W ----- K 2L n v DS = v GS sat (current)

### Chapter 02 Logic Design with MOSFETs

Introduction to VLSI Circuits and Systems 路 論 Chapter 02 Logic Design with MOSFETs Dept. of Electronic Engineering National Chin-Yi University of Technology Fall 2007 Outline The Fundamental MOSFETs Ideal

### Figure 1: Structure of N-channel JFET

JUNCTION FIELD EFFECT TRANSISTOR. JFET Principles. Unlike the bipolar transistor in which both types of carriers are involved, the junction field effect transistor (JFET) is an unipolar device for which

### Introduction to CMOS VLSI Design (E158) Lecture 3: Transistors and Gates

Harris Introduction to CMOS VLSI Design (E158) Lecture 3: Transistors and Gates David Harris Harvey Mudd College David_Harris@hmc.edu Based on EE271 developed by Mark Horowitz, Stanford University MAH

### Experiment No. 10 DIGITAL CIRCUIT DESIGN

Experiment No. 10 DIGITAL CIRCUIT DESIGN 1. Objective: The objective of this experiment is to study three fundamental digital circuits. These three circuits form the basis of all other digital circuits,

### ESE 570: Digital Integrated Circuits and VLSI Fundamentals

ESE 570: Digital Integrated Circuits and VLSI Fundamentals Lec 19: March 29, 2016 Timing Hazards and Dynamic Logic Lecture Outline! Review: Sequential MOS Logic " SR Latch " D-Latch! Timing Hazards! Dynamic

### Semiconductor Memories

Chapter 8 Semiconductor Memories (based on Kang, Leblebici. CMOS Digital Integrated Circuits 8.1 General concepts Data storage capacity available on a single integrated circuit grows exponentially being

### EEC 118 Spring 2011 Midterm

EEC 118 Spring 2011 Midterm Rajeevan Amirtharajah Dept. of Electrical and Computer Engineering University of California, Davis May 2, 2011 This examination is closed book and closed notes. Some formulas

### CHAPTER 14 CMOS DIGITAL LOGIC CIRCUITS

CHAPTER 4 CMOS DIGITAL LOGIC CIRCUITS Chapter Outline 4. Digital Logic Inverters 4. The CMOS Inverter 4.3 Dynamic Operation of the CMOS Inverter 4.4 CMOS Logic-Gate Circuits 4.5 Implications of Technology

### Enhancement Mode MOSFET Circuits

Engineering Sciences 154 Laboratory Assignment 4 Enhancement Mode MOSFET Circuits Note: This is quite a long, but very important laboratory assignment. Take enough time - at least two laboratory sessions

### Index i xi xv xxvi. Abstract List of Tables List of Figures Glossary. Page.No CHAPTER 1 INTRODUCTION

iv Abstract List of Tables List of Figures Glossary Index i xi xv xxvi CHAPTER 1 INTRODUCTION 1.1 Introduction 1.2 Formulation of the problem 1.3 Objectives 1.4 Methodology 1.5 Contribution of the Thesis

### Pass-Transistor Logic EE141

Pass-Transistor Logic 1 Pass-Transistor Logic puts Switch Network Out Out N transistors No static consumption Primary inputs drive the gate terminals + source-drain terminals. contrast to static MOS primary

### Unit 2. Electronic circuits and logic families

Unit 2. Electronic circuits and logic families Digital Electronic Circuits (Circuitos Electrónicos Digitales) E.T.S.. nformática Universidad de Sevilla Sept. 23 Jorge Juan 223 You are

### Lecture 3: Transistors

Lecture 3: Transistors Now that we know about diodes, let s put two of them together, as follows: collector base emitter n p n moderately doped lightly doped, and very thin heavily doped At first glance,

### Chapter 2. MOS Transistors. 2.1 Structure of MOS transistors

Chapter 2 MOS Transistors 2.1 Structure of MOS transistors We will discuss the structure of two MOS Field-Effect-Transistors (FETs) that are building blocks for all digital devices. The nmos transistor

### VIII.4. Field Effect Transistors

Field Effect Transistors (FETs) utilize a conductive channel whose resistance is controlled by an applied potential. 1. Junction Field Effect Transistor (JFET) In JFETs a conducting channel is formed of

### Logic Design. Implementation Technology

Logic Design Implementation Technology Outline Implementation of logic gates using transistors Programmable logic devices Complex Programmable Logic Devices (CPLD) Field Programmable Gate Arrays (FPGA)

### FOUR BIT SHIFT REGISTER

FOUR BIT SHIFT REGISTER EE 584 GUIDED BY: Dr. Elias Adjunct Professor University of Kentucky SUBMITTED BY: Chris Soh Karan Jhavar Stephen Disney Tapan Desai (Group 13) 1 INDEX Introduction..2 Historical

### BIPOLAR JUNCTION TRANSISTORS (BJTS)

BIPOLAR JUNCTION TRANSISTORS (BJTS) With an electrical current applied to the center layer (called the base), electrons will move from the N-type side to the P-type side. The initial small trickle acts

### Field effect transistors

Field effect transistors Junction FETs Metal-Oxide Semiconductor FETs type N type P enhancement depletion type N type P type N type P Slide 1 Junction field effect transistor - JFET Construction and circuits

### Chapter 13: Comparators

Chapter 13: Comparators So far, we have used op amps in their normal, linear mode, where they follow the op amp Golden Rules (no input current to either input, no voltage difference between the inputs).

### Module 6 : Semiconductor Memories Lecture 28 : Static Random Access Memory (SRAM)

Module 6 : Semiconductor Memories Lecture 28 : Static Random Access Memory (SRAM) Objectives In this lecture you will learn the following SRAM Basics CMOS SRAM Cell CMOS SRAM Cell Design READ Operation

### Novel Approaches to Low Leakage and Area Efficient VLSI Design. Professor Md. Shafiqul Islam, PhD

Novel Approaches to Low Leakage and Area Efficient VLSI Design A Thesis Submitted to the Department of Electrical and Electronic Engineering in Partial Fulfillment of the Requirements for the Degree of

### Layout, Fabrication, and Elementary Logic Design

Introduction to CMOS VLSI Design Layout, Fabrication, and Elementary Logic Design Adapted from Weste & Harris CMOS VLSI Design Overview Implementing switches with CMOS transistors How to compute logic

### Electronic Circuits for Mechatronics ELCT609 Lecture 7: MOS-FET Transistor

Electronic Circuits for Mechatronics ELCT609 Lecture 7: MOS-FET Transistor Assistant Professor Office: C3.315 E-mail: eman.azab@guc.edu.eg 1 Introduction Why we call it Transistor? The name came as an

### Chapter 28. Transistor Construction

Chapter 28 Basic Transistor Theory Transistor Construction Bipolar Junction Transistor (BJT) 3 layers of doped semiconductor 2 p-n junctions Layers are: Emitter, Base, and Collector Can be NPN or PNP Emitter

### QUAD/DUAL P-CHANNEL MATCHED PAIR MOSFET ARRAY

ADVANCED LINEAR DEVICES, INC. ALD07/ALD7 QUAD/DUAL P-CHANNEL MATCHED PAIR MOSFET ARRAY GENERAL DESCRIPTION The ALD07/ALD7 are monolithic quad/dual P-channel enhancement mode matched MOSFET transistor arrays

### Exercise 6-1. The Power MOSFET EXERCISE OBJECTIVES

Exercise 6-1 The Power MOSFET EXERCISE OBJECTIVES At the completion of this exercise, you will know the behaviour of the power MOSFET during switching operation. You will be able to explain how MOSFET

### Sample Final Exam FinalDay, FinalMonth, FinalYear ELEC4708: Advanced Digital Electronics Department of Electronics, Carleton University

0 0 Sample Final Exam FinalDay, FinalMonth, FinalYear ELEC4708: Advanced Digital Electronics Department of Electronics, Carleton University Instructor: Maitham Shams Exam Duration: 3 hour Booklets: None

### Low Power VLSI Circuits and Systems Prof. Pro. Ajit Pal Department of Computer Science and Engineering Indian Institute of Technology, Kharagpur

Low Power VLSI Circuits and Systems Prof. Pro. Ajit Pal Department of Computer Science and Engineering Indian Institute of Technology, Kharagpur Lecture No. # 14 Pass Transistor Logic Circuits - I Hello

### Junction Field Effect Transistor (JFET)

Junction Field Effect Transistor (JFET) The single channel junction field-effect transistor (JFET) is probably the simplest transistor available. As shown in the schematics below (Figure 6.13 in your text)

### 5. Sequential CMOS Logic Circuits

5. Sequential CMOS Logic Circuits In sequential logic circuits the output signals is determined by the current inputs as well as the previously applied input variables. Fig. 5.1a shows a sequential circuit

### Comparators. Chapter 10

Comparators Chapter 10 Introduction The second most widely used circuit block are comparators after OpAmps. They are used extensively in A/D converters and other signal processing applications. 10.1.1

### IGFET Transistors. Biasing, Gain, Input and Output. James K Beard, Ph.D. Assistant Professor Rowan University

IGFET Transistors Biasing, Gain, Input and Output James K Beard, Ph.D. Assistant Professor Rowan University beard@rowan.edu Table of Contents IGFET Transistors...i Biasing, Gain, Input and Output... i

### Module 4 : Propagation Delays in MOS Lecture 16 : Propagation Delay Calculation of CMOS Inverter

Module 4 : Propagation Delays in MOS Lecture 16 : Propagation Delay Calculation of CMOS Inverter Objectives In this lecture you will learn the following Few Definitions Quick Estimates Rise and Fall times

### Multivibrator Circuits. Bistable multivibrators

Multivibrator ircuits Bistable multivibrators Multivibrators ircuits characterized by the existence of some well defined states, amongst which take place fast transitions, called switching processes. A

### Lecture 3-1. Inverters and Combinational Logic

Lecture 3 Konstantinos Masselos Department of Electrical & Electronic Engineering Imperial College London URL: http://cas.ee.ic.ac.uk/~kostas E-mail: k.masselos@imperial.ac.uk Lecture 3-1 Based on slides/material

### Capacitors and RC Circuits

Chapter 6 Capacitors and RC Circuits Up until now, we have analyzed circuits that do not change with time. In other words, these circuits have no dynamic elements. When the behavior of all elements is

### BiCMOS Logic Gates. University of Connecticut 224

BiCMOS Logic Gates University of Connecticut 224 BiCMOS - Best of Both Worlds? CMOS circuitry exhibits very low power dissipation, but Bipolar logic achieves higher speed and current drive capability.

### Module 4 : Propagation Delays in MOS Lecture 22 : Logical Effort Calculation of few Basic Logic Circuits

Module 4 : Propagation Delays in MOS Lecture 22 : Logical Effort Calculation of few Basic Logic Circuits Objectives In this lecture you will learn the following Introduction Logical Effort of an Inverter

### electronics fundamentals

electronics fundamentals circuits, devices, and applications THOMAS L. FLOYD DAVID M. BUCHLA Lesson 2: Transistors and Applications Introduction A transistor is a semiconductor device that controls current

### CMOS Sample-and-Hold Circuits

CMOS Sample-and-Hold Circuits ECE 1352 Reading Assignment By: Joyce Cheuk Wai Wong November 12, 2001 Department of Electrical and Computer Engineering University of Toronto 1. Introduction Sample-and-hold

### Notes about Small Signal Model. for EE 40 Intro to Microelectronic Circuits

Notes about Small Signal Model for EE 40 Intro to Microelectronic Circuits 1. Model the MOSFET Transistor For a MOSFET transistor, there are NMOS and PMOS. The examples shown here would be for NMOS. Figure

### Lecture 24. MOSFET Basics (Understanding with no math)

Lecture 24 MOSFET Basics (Understanding with no math) Reading: Pierret 17.1-17.2 and Jaeger 4.1-4.10 and Notes Flow of current from Source to Drain is controlled by the Gate voltage. Control by the Gate

### 9. Memory Elements and Dynamic Logic

9. Memory Elements and RS Flipflop The RS-flipflop is a bistable element with two inputs: Reset (R), resets the output Q to 0 Set (S), sets the output Q to 1 2 RS-Flipflops There are two ways to implement

### C H A P T E R 14. CMOS Digital Logic Circuits

C H A P T E R 14 CMOS Digital Logic Circuits Introduction CMOS is by far the most popular technology for the implementation of digital systems. The small size, ease of fabrication, and low power consumption

### CHAPTER 4 ELECTRO-OPTICAL HYBRID LOGIC GATES

54 CHAPTER 4 ELECTRO-OPTICAL HYBRID LOGIC GATES 55 CHAPTER 4 ELECTRO-OPTICAL HYBRID LOGIC GATES 4.0 INTRODUCTION This chapter is devoted to describe the circuit structures of electrooptical hybrid logic

### Phase Control IC TCA 785

Phase Control IC TCA 785 Pb-free lead plating; RoHS compliant Features Reliable recognition of zero passage Large application scope May be used as zero point switch LSL compatible Three-phase operation

### Field-Effect (FET) transistors

Field-Effect (FET) transistors References: Barbow (Chapter 8), Rizzoni (chapters 8 & 9) In a field-effect transistor (FET), the width of a conducting channel in a semiconductor and, therefore, its current-carrying

### Shift registers. 1.0 Introduction

Shift registers 1.0 Introduction Shift registers are a type of sequential logic circuit, mainly for storage of digital data. They are a group of flip-flops connected in a chain so that the output from

### MOS Transistors as Switches

MOS Transistors as Switches G (gate) nmos transistor: Closed (conducting) when Gate = 1 (V DD ) D (drain) S (source) Oen (non-conducting) when Gate = 0 (ground, 0V) G MOS transistor: Closed (conducting)

### ECE124 Digital Circuits and Systems Page 1

ECE124 Digital Circuits and Systems Page 1 Chip level timing Have discussed some issues related to timing analysis. Talked briefly about longest combinational path for a combinational circuit. Talked briefly

### Electronics The application of bipolar transistors

Electronics The application of bipolar transistors Prof. Márta Rencz, Gergely Nagy BME DED October 1, 2012 Ideal voltage amplifier On the previous lesson the theoretical methods of amplification using

### Diode-Transistor Logic (DTL) University of Connecticut 56

Diode-Transistor Logic (DTL) University of Connecticut 56 Diode Logic AND GATE OR GATE Diode Logic suffers from voltage degradation from one stage to the next. Diode Logic only permits the OR and AND functions.

### EE-4232 Review of BJTs, JFETs and MOSFETs

EE-4232 Review of BJTs, JFETs and MOSFETs 0 A simplified structure of the npn transistor. 1 A simplified structure of the pnp transistor. 2 Current flow in an npn transistor biased to operate in the active

### Pass Gate Logic An alternative to implementing complex logic is to realize it using a logic network of pass transistors (switches).

Pass Gate Logic n alternative to implementing complex logic is to realize it using a logic network of pass transistors (switches). Switch Network Regeneration is performed via a buffer. We have already

### Field-Effect (FET) transistors

Field-Effect (FET) transistors References: Hayes & Horowitz (pp 142-162 and 244-266), Rizzoni (chapters 8 & 9) In a field-effect transistor (FET), the width of a conducting channel in a semiconductor and,

### EE 2209 Electronics-II Field Effect Transistor Dr. Mostafa Zaman Chowdhury

EE 2209 Electronics-II Field Effect Transistor Dr. Mostafa Zaman Chowdhury Dept. of Electrical and Electronic Engineering, KUET 1 EE 2209 Electronics-I Credit: 4, Contact Hours: 4 Hrs/Week Ø Syllabus v

### Unipolar Devices Semiconductor Physics ABV- IIITM-Gwalior (MP) India

Unipolar Devices Semiconductor Physics Term (Index) unipolar device bipolar device Definition semiconductor device operation is based predominantly on the use of majority charge carriers e.g. all transistors

### Bob York. Transistor Basics - MOSFETs

Bob York Transistor Basics - MOSFETs Transistors, Conceptually So far we have considered two-terminal devices that are described by a current-voltage relationship I=f(V Resistors: Capacitors: Inductors:

### Gates, Circuits, and Boolean Algebra

Gates, Circuits, and Boolean Algebra Computers and Electricity A gate is a device that performs a basic operation on electrical signals Gates are combined into circuits to perform more complicated tasks

### Lecture 30: Biasing MOSFET Amplifiers. MOSFET Current Mirrors.

Whites, EE 320 Lecture 30 Page 1 of 8 Lecture 30: Biasing MOSFET Amplifiers. MOSFET Current Mirrors. There are two different environments in which MOSFET amplifiers are found, (1) discrete circuits and

### 1) For a RS flip flop constructed out of NAND gates complete the following table. R S Q Q\ State name Q Q\

Sequential logic tutorial Flip Flops 1) For a RS flip flop constructed out of NAND gates complete the following table R S Q Q\ State name 0 0 1 1 0 1 0 1 1 0 1 0 1 1 Q Q\ 2) Complete the following timing

### 3.1 Principles of Operation

Chapter 3 MOSFET TRANSISTORS Last year, more transistors were produced and at a lower cost than grains of rice. - SEMI Annual Report 05 MOSFET transistors are the core of today s integrated circuits (ICs).

### Chapter 7. Sequential Circuit Design

Chapter 7 Sequential Circuit Design 7.0 Introduction The combinational circuit discussed in the previous chapter does not have the capability to remember the event. Sequential circuit is consisting of

### Logic Gates. Highlights: Combinational logic. Static logic gates. Delay and power. Alternate gate structures: switch, domino, etc. Wire delay models.

3 Logic Gates Highlights: Combinational logic. Static logic gates. Delay and power. Alternate gate structures: switch, domino, etc. Wire delay models. 3.1 Introduction This chapter concentrates on the

### Generation of Square and Rectangular Waveforms Using Astable Multivibrators

Generation of Square and Rectangular Waveforms Using Astable Multivibrators A square waveform can be generated by arranging for a bistable multivibrator to switch states periodically. his can be done by

### Logic Gates & Operational Characteristics

Logic Gates & Operational Characteristics NOR Gate as a Universal Gate The NOR gate is also used as a Universal Gate as the NOR Gate can be used in a combination to perform the function of a AND, OR and

### Electronics Field-effect transistors

Electronics Field-effect transistors Prof. Márta Rencz, Gergely Nagy BME DED October 7, 2013 The basics of field-effect transistors The operation of field-effect transistors is based on ability of controlling

### Part 2: Operational Amplifiers

Part 2: Operational Amplifiers An operational amplifier is a very high gain amplifier. Op amps can be used in many different ways. Two of the most common uses are a) as comparators b) as amplifiers (either

### Page 2 CK K. Figure 3: JK Flip-flops with asynchronous PRESET and CLEAR inpu CK K. Figure 2: JK Flip-flops with different types of triggering

EGR 78 Digital Logic Lab File: N78L9A Lab # 9 Multivibrators A. Objective The objective of this laboratory is to introduce the student to the use of bistable multivibrators (flip-flops), monostable multivibrators

### MOSFET I-V characteristics: general consideration

The current through the channel is V I = R MOSFET I-V characteristics: general consideration where V is the DRAIN SOURCE voltage The gate length L V + - - V GS + G S Semiconductor D Here, we are assuming

### International Conference on Science, Technology, Engineering & Management [ICON-STEM 15]

An Enhanced Technique for Leakage Reduction in 8:1 Domino Multiplexer S. Lakshmi Narayanan*, R. Jaya Nandhini, Dr. ReebaKorah Department of ECE, Anna University, Chennai,Tamil Nadu, India. *Corresponding

### 1002 Logic gates and Transistors Peter Rounce - room 6.18

1002 Logic gates and Transistors Peter Rounce - room 6.18 p.rounce@cs.ucl.ac.uk 14/12/2006 1001 Logic Gates & Transistors 1 Materials Metals - an electron is released by each metal atom to form electron

### CHAPTER 11: Flip Flops

CHAPTER 11: Flip Flops In this chapter, you will be building the part of the circuit that controls the command sequencing. The required circuit must operate the counter and the memory chip. When the teach

### Lab 3. Transistor and Logic Gates

Lab 3. Transistor and Logic Gates Laboratory Instruction Today you will learn how to use a transistor to amplify a small AC signal as well as using it as a switch to construct digital logic circuits. Introduction

### Outline. nmos Transistor. MOS Capacitor. Transistors and Scaling Introduction to Nanotechnology. Transistor theory Transistor reality Scaling

15398 ntroduction to Nanotechnology Transistors and Scaling Transistor theory Transistor reality Scaling Outline Seth Copen Goltein seth@cs.cmu.edu CMU Adapted from ntro to CMOS S Design, Harris lecture6

### Digital Circuits. Frequently Asked Questions

Digital Circuits Frequently Asked Questions Module 1: Digital & Analog Signals 1. What is a signal? Signals carry information and are defined as any physical quantity that varies with time, space, or any

### Lecture 060 Push-Pull Output Stages (1/11/04) Page 060-1. ECE 6412 - Analog Integrated Circuits and Systems II P.E. Allen - 2002

Lecture 060 PushPull Output Stages (1/11/04) Page 0601 LECTURE 060 PUSHPULL OUTPUT STAGES (READING: GHLM 362384, AH 226229) Objective The objective of this presentation is: Show how to design stages that

### An Example Problem on the NMOS and A PMOS Introduction

ENEE 313, Fall 08 Supplement IV An Example Problem on the NMOS and A PMOS Introduction Zeynep Dilli, Dec. 2008 This is a supplement presenting an example question on MOSFET operation and reviews the MOSFET

Module 7 : I/O PADs Lecture 33 : I/O PADs Objectives In this lecture you will learn the following Introduction Electrostatic Discharge Output Buffer Tri-state Output Circuit Latch-Up Prevention of Latch-Up

### Electronic Technology Design and Workshop

IFE, B&T, V semester Electronic Technology Design and Workshop Presented and updated by Przemek Sekalski DMCS room 2 2007 IFE, B&T, V semester Electronic Technology Design and Workshop Lecture 4 Introduction

### Build Your Own Transistor Logic Circuits. Workshop Manual v1.0

Build Your Own Transistor Logic Circuits Workshop Manual v.0 VCF East 7.0 May 4 5, 20 Build Your Own Transistor Logic Circuits. Introduction This workshop allows you to build a modular, plugin card containing

### 1.2 MOSFET (Metal Oxide Semiconductor Field Effect Transistors)

1.1 Introduction 1 1.1 Introduction The field-effect transistor (FET) controls the current between two points but does so differently than the bipolar transistor. The FET operates by the effects of an

### Analog & Digital Electronics Course No: PH-218

Analog & Digital Electronics Course No: PH-218 Lec-28: Logic Gates & Family Course Instructor: Dr. A. P. VAJPEYI Department of Physics, Indian Institute of Technology Guwahati, India 1 Digital Logic Gates

### Combinational Logic Building Blocks and Bus Structure

Combinational Logic Building Blocks and Bus Structure ECE 5A Winter 0 Reading Assignment Brown and Vranesic Implementation Technology.8 Practical Aspects.8.7 Passing s and 0s Through Transistor Switches.8.8