Lecture 13. Biasing and Loading Single Stage FET Amplifiers. The Building Blocks of Analog Circuits - III

Size: px
Start display at page:

Download "Lecture 13. Biasing and Loading Single Stage FET Amplifiers. The Building Blocks of Analog Circuits - III"

Transcription

1 Lecture 3 Biasing and Loading Single Stage FET Amplifiers The Building Blocks of Analog Circuits III In this lecture you will learn: Current biasing of circuits Current sources and sinks for CS, CG, and CD circuits A Poor Man s Current Source What if one wanted to bias a device with a current source? R D but one only had a voltage source? Solution: Use a large voltage source with a large resistor in series! I BIAS R R D Poor man s current source BIAS BIAS I R RD R

2 The Common Source Amplifier DD R R S v s BIAS v out Open circuit voltage gain: v i R A out d v gm ro R v v in in The Common Source Amplifier: Problems Open circuit voltage gain: v A out v gm ro R v in In saturation: I g D m GS knid nds To achieve large gain one needs: ) A large DC current bias in order to get a large g m ) A large value of the resistor R Both the above requirements cannot be met easily simultaneously: Not easy to realize large resistors in michips A large resistor R will limit the maximum value of the DC current bias (because the potential drop R can become large enough to put the FET in the linear region where g m and the gain will be small)

3 The Digital Logic Inverter: Problems DD Saturation IN TN Cutoff Linear TN IN To achieve fast switching one needs: ) A small resistor (because then the RC L charging time will be smaller when the output switches from to ) But A small resistor will require a very large current (to achieve a large potential drop across it) when the input is, and the is turned on, and the output need to be low or and this means more power dissipation When the input is, and the is turned on, there is constant static power dissipation The Common Source Amplifier with a Current Source DD R S What is needed is an ideal current source in the drain that can supply a large DC current and at the same time has a large small signal resistance v s BIAS v out The incremental (or differential or small signal) resistance looking into an ideal current source is infinite v A out v gmro vin An ideal current source, of course, does not exist But one can certainly do much better than using a resistor in the drain 3

4 The Common Source Amplifier with a Current Source: DC Biasing I D W IBIAS n Cox GS TN L n DS Suppose for BIAS the output was g m BIAS Suppose BIAS is changed to a smaller value BIAS BIAS = BIAS BIAS < The output can be obtained graphically, as shown DS The Common Source Amplifier with a Current Source: DC Biasing 4

5 The CS Amplifier with a Current Source: Small Signal Analysis i g Gate Drain i d v in v gs Source g m v gs Base g mb v bs v bs r o v out Open circuit voltage gain: A v v v out in g r m o Large Output resistance: Rout r o Large Large Signal Model of a Current Source Large signal circuit model The output resistance of the current source Ideal current source A current source A large signal model of a current source is large for a good current source and infinite for an ideal current source IBIAS Slope d d One can have any voltage at the at the output terminals of a good current source and the current delivered will remain mostly constant 5

6 Small Signal Model of a Current Source IBIAS Slope d d Large signal circuit model The output resistance of the current source Ideal current source IBIAS Small signal circuit model A current source Large Signal Model of a Current Sink Large signal circuit model The output resistance of the current sink Ideal current source A current sink A large signal model of a current source is large for a good current source and infinite for an ideal current source IBIAS Slope di d One can have any voltage at the at the output terminals of a good current sink and the current dinked will remain mostly constant 6

7 Small Signal Model of a Current Sink IBIAS Slope di d Large signal circuit model The output resistance of the current source Ideal current source IBIAS Small signal circuit model A current sink Loaded Common Source Amplifier DD A approximation to a current source B DD A load v s BIAS R S v out v s BIAS R S v out An ideal current source, of course, does not exist But one can certainly do much better than using a resistor in the drain Use a! 7

8 Current Sink: Current Sinks and Transistors Slope di d I I One can have any voltage at the at the output terminals of a good current sink and the current sinked will remain mostly constant Slope d go d ro B Characteristics in saturation resemble that of a nonideal current source! Current Sources: Current Sources and Transistors I I Slope d d One can have any voltage at the at the output terminals of a good current source and the current delivered will remain mostly constant Slope d g o d r o B Characteristics in saturation resemble that of a nonideal current source! 8

9 Loaded : Large Signal Analysis M M B BIAS DS DS ID ID ID DD DC value of the output voltage (Both FETs in saturation) DD Instead of the resistive load line, we now have the full vs DS curves of the The biasing voltages need to be selected carefully, otherwise one of the transistors can go into the linear region!! Loaded : Large Signal Analysis B M = M BIAS DS DS ID ID ID DD DC value of the output voltage ( in the linear region) DD Instead of the resistive load line, we now have the full vs DS curves of the PMOS The biasing voltages need to be selected carefully, otherwise one of the transistors can go into the linear region!! 9

10 Loaded : Large Signal Analysis M M Assuming the biasing is correct, both the FETs are in saturation Equate the drain current magnitudes of the two FETs Then the only unknown will be ; solve for it kn k ID GS TN n DS BIAS TN I D kp Equating: I D I k n D n I n p GS TP erify that the obtained value of does indeed result in both the transistors being in saturation p DS k B DD TP p p BIAS D TN n k B DD TP p DD DD Loaded : Transfer Curve M I: IN < TN M cutoff II: IN > TN & > IN TN & > B TP M saturation, M Linear M III: IN > TN & > IN TN & < B TP M saturation, M saturation I: IN > TN & < IN TN & < B TP M linear, M saturation II IN TN DD B TP III Increasing IN I B I III I II TN IN I

11 Loaded : Small Signal Analysis M i g Gate v gs g m vgs Drain r o i d M Source Looking into the drain end of the, what does one see? i g Gate Drain i d R S v s v in v gs Source g m v gs r o v out PMOS Loaded NMOS: Small Signal Analysis M Drain i d r o M Looking into the drain end of the, what does one see? i g Gate Drain i d R S v s v in v gs Source g m v gs r o v out

12 Loaded : Small Signal Analysis i g i d M M v in v gs g m v gs r o r o v out Open circuit voltage gain: Av v out vin g m r o r o Output resistance: R out r o r o Loaded : The Cascode Load DD DD load R D Better load B3 M3 B M B M v s BIAS R S M v out v s BIAS R S M v out This load has a larger resistance looking into it This topology is called the Cascode current load

13 Cascode PEFT Load: Small Signal Analysis load 3 i g3 Gate3 v gs3 g m 3vgs3 Drain3 i d 3 r o3 Source3 i g Gate Drain i d v gs g m v gs r o Source Cascode Load: Small Signal Analysis Drain3 i d 3 load 3 r o3 i g Gate Drain i d v gs g m v gs r o Source 3

14 Cascode Load: Small Signal Analysis i g Gate Drain i d load 3 v gs g m v gs r o Source r o3 Resistance looking into the current source is: g r g r r 3 ro ro3 gmroro 3 ro ro3 m o m o o Typically a good approximation Cascode Load: Small Signal Analysis load ro ro3 gmro 3 g r r m o o3 i d Resistance looking into the current source is: g r g r r 3 ro ro3 gmroro 3 ro ro3 m o m o o Typically a good approximation 4

15 Cascode Load: Small Signal Analysis i g i d load v in v gs g m v gs r o g r r m o o3 v out Open circuit voltage gain: v A out v vin Output resistance: r g r r 3 g r gm o m o o m o Typically a good approximation Rout g r r 3 r ro m o o o Typically a good approximation The Common Source Amplifier: General Topology IN IN is the most positive voltage in the circuit is the most negative voltage in the circuit Large input resistance Large output resistance Large voltage gain Large current gain 5

16 The Common Gate Amplifier: General Topology IN G G IN IBIAS Can have small input resistance Large output resistance Large voltage gain Small (unity) current gain The Common Drain Amplifier: General Topology IN IN Large input resistance Small output resistance Small (less than unity) voltage gain 6

17 ChipBased Current Sources and oltage Sources We have realized a decent load but How does one generate voltage levels on a chip for biasing?? Current and voltage biasing of circuits require transistor based current and voltage sources on a chip! What are the good figures of merit of chipbased voltage and current sources? 7

Lecture 14. FET Current and Voltage Sources and Current Mirrors. The Building Blocks of Analog Circuits - IV

Lecture 14. FET Current and Voltage Sources and Current Mirrors. The Building Blocks of Analog Circuits - IV Lecture 4 FET Current and oltage s and Current Mirrors The Building Blocks of Analog Circuits n this lecture you will learn: Current and voltage sources using FETs FET current mirrors Cascode current mirror

More information

Solid State Devices & Circuits. 18. Advanced Techniques

Solid State Devices & Circuits. 18. Advanced Techniques ECE 442 Solid State Devices & Circuits 18. Advanced Techniques Jose E. Schutt-Aine Electrical l&c Computer Engineering i University of Illinois jschutt@emlab.uiuc.edu 1 Darlington Configuration - Popular

More information

Lecture 12. Single Stage FET Amplifiers: Common Gate Amplifier Common Drain Amplifier. The Building Blocks of Analog Circuits - II

Lecture 12. Single Stage FET Amplifiers: Common Gate Amplifier Common Drain Amplifier. The Building Blocks of Analog Circuits - II Lecture 12 Single Stage FET Amplifiers: Common Amplifier Common Amplifier The Building Blocks of Analog Circuits II In this lecture you will learn: Common (CG) and Common (CD) Amplifiers Small signal models

More information

ECE315 / ECE515 Lecture 8 Date:

ECE315 / ECE515 Lecture 8 Date: ECE35 / ECE55 Lecture 8 Date: 05.09.06 CS Amplifier with Constant Current Source Current Steering Circuits CS Stage Followed by CG Stage Cascode as Current Source Cascode as Amplifier ECE35 / ECE55 CS

More information

ECE315 / ECE515 Lecture 7 Date:

ECE315 / ECE515 Lecture 7 Date: Lecture 7 ate: 01.09.2016 CG Amplifier Examples Biasing in MOS Amplifier Circuits Common Gate (CG) Amplifier CG Amplifier- nput is applied at the Source and the output is sensed at the rain. The Gate terminal

More information

ECE 546 Lecture 12 Integrated Circuits

ECE 546 Lecture 12 Integrated Circuits ECE 546 Lecture 12 Integrated Circuits Spring 2018 Jose E. Schutt-Aine Electrical & Computer Engineering University of Illinois jesa@illinois.edu ECE 546 Jose Schutt Aine 1 Integrated Circuits IC Requirements

More information

EE311: Electrical Engineering Junior Lab, Fall 2006 Experiment 4: Basic MOSFET Characteristics and Analog Circuits

EE311: Electrical Engineering Junior Lab, Fall 2006 Experiment 4: Basic MOSFET Characteristics and Analog Circuits EE311: Electrical Engineering Junior Lab, Fall 2006 Experiment 4: Basic MOSFET Characteristics and Analog Circuits Objective This experiment is designed for students to get familiar with the basic properties

More information

Amplifier Design Using an Active Load

Amplifier Design Using an Active Load THE PENNSYLVANIA STATE UNIVERSITY EE 310 : ELECTRONIC CIRCUIT DESIGN I Amplifier Design Using an Active Load William David Stranburg 1 Introduction: In Part 1 of this lab, we used an NMOS amplifying transistor

More information

EE 330 Laboratory 7 MOSFET Device Experimental Characterization and Basic Applications Spring 2017

EE 330 Laboratory 7 MOSFET Device Experimental Characterization and Basic Applications Spring 2017 EE 330 Laboratory 7 MOSFET Device Experimental Characterization and Basic Applications Spring 2017 Objective: The objective of this laboratory experiment is to become more familiar with the operation of

More information

CMOS VLSI Design (A3425)

CMOS VLSI Design (A3425) CMOS VLSI Design (A3425) Unit III Static Logic Gates Introduction A static logic gate is one that has a well defined output once the inputs are stabilized and the switching transients have decayed away.

More information

Lecture 34: Designing amplifiers, biasing, frequency response. Context

Lecture 34: Designing amplifiers, biasing, frequency response. Context Lecture 34: Designing amplifiers, biasing, frequency response Prof J. S. Smith Context We will figure out more of the design parameters for the amplifier we looked at in the last lecture, and then we will

More information

Session 2 MOS Transistor for RF Circuits

Session 2 MOS Transistor for RF Circuits Session 2 MOS Transistor for RF Circuits Session Speaker Chandramohan P. Session Contents MOS transistor basics MOS equivalent circuit Single stage amplifiers Opamp design Session objectives To understand

More information

8. Characteristics of Field Effect Transistor (MOSFET)

8. Characteristics of Field Effect Transistor (MOSFET) 1 8. Characteristics of Field Effect Transistor (MOSFET) 8.1. Objectives The purpose of this experiment is to measure input and output characteristics of n-channel and p- channel field effect transistors

More information

Gechstudentszone.wordpress.com

Gechstudentszone.wordpress.com UNIT 4: Small Signal Analysis of Amplifiers 4.1 Basic FET Amplifiers In the last chapter, we described the operation of the FET, in particular the MOSFET, and analyzed and designed the dc response of circuits

More information

Reading. Lecture 17: MOS transistors digital. Context. Digital techniques:

Reading. Lecture 17: MOS transistors digital. Context. Digital techniques: Reading Lecture 17: MOS transistors digital Today we are going to look at the analog characteristics of simple digital devices, 5. 5.4 And following the midterm, we will cover PN diodes again in forward

More information

Experiment 5 Single-Stage MOS Amplifiers

Experiment 5 Single-Stage MOS Amplifiers Experiment 5 Single-Stage MOS Amplifiers B. Cagdaser, H. Chong, R. Lu, and R. T. Howe UC Berkeley EE 105 Fall 2005 1 Objective This is the first lab dealing with the use of transistors in amplifiers. We

More information

Chapter 4 Single-stage MOS amplifiers

Chapter 4 Single-stage MOS amplifiers Chapter 4 Single-stage MOS amplifiers ELEC-H402/CH4: Single-stage MOS amplifiers 1 Single-stage MOS amplifiers NMOS as an amplifier: example of common-source circuit NMOS amplifier example Introduction

More information

Lecture 2, Amplifiers 1. Analog building blocks

Lecture 2, Amplifiers 1. Analog building blocks Lecture 2, Amplifiers 1 Analog building blocks Outline of today's lecture Further work on the analog building blocks Common-source, common-drain, common-gate Active vs passive load Other "simple" analog

More information

Lecture 16: MOS Transistor models: Linear models, SPICE models. Context. In the last lecture, we discussed the MOS transistor, and

Lecture 16: MOS Transistor models: Linear models, SPICE models. Context. In the last lecture, we discussed the MOS transistor, and Lecture 16: MOS Transistor models: Linear models, SPICE models Context In the last lecture, we discussed the MOS transistor, and added a correction due to the changing depletion region, called the body

More information

Microelectronic Circuits II. Ch 10 : Operational-Amplifier Circuits

Microelectronic Circuits II. Ch 10 : Operational-Amplifier Circuits Microelectronic Circuits II Ch 0 : Operational-Amplifier Circuits 0. The Two-stage CMOS Op Amp 0.2 The Folded-Cascode CMOS Op Amp CNU EE 0.- Operational-Amplifier Introduction - Analog ICs : operational

More information

ELEC 350L Electronics I Laboratory Fall 2012

ELEC 350L Electronics I Laboratory Fall 2012 ELEC 350L Electronics I Laboratory Fall 2012 Lab #9: NMOS and CMOS Inverter Circuits Introduction The inverter, or NOT gate, is the fundamental building block of most digital devices. The circuits used

More information

Microelectronics Circuit Analysis and Design

Microelectronics Circuit Analysis and Design Microelectronics Circuit Analysis and Design Donald A. Neamen Chapter 3 The Field Effect Transistor Neamen Microelectronics, 4e Chapter 3-1 In this chapter, we will: Study and understand the operation

More information

Homework Assignment 07

Homework Assignment 07 Homework Assignment 07 Question 1 (Short Takes). 2 points each unless otherwise noted. 1. A single-pole op-amp has an open-loop low-frequency gain of A = 10 5 and an open loop, 3-dB frequency of 4 Hz.

More information

INTRODUCTION TO ELECTRONICS EHB 222E

INTRODUCTION TO ELECTRONICS EHB 222E INTRODUCTION TO ELECTRONICS EHB 222E MOS Field Effect Transistors (MOSFETS II) MOSFETS 1/ INTRODUCTION TO ELECTRONICS 1 MOSFETS Amplifiers Cut off when v GS < V t v DS decreases starting point A, once

More information

Figure 1: JFET common-source amplifier. A v = V ds V gs

Figure 1: JFET common-source amplifier. A v = V ds V gs Chapter 7: FET Amplifiers Switching and Circuits The Common-Source Amplifier In a common-source (CS) amplifier, the input signal is applied to the gate and the output signal is taken from the drain. The

More information

d. Can you find intrinsic gain more easily by examining the equation for current? Explain.

d. Can you find intrinsic gain more easily by examining the equation for current? Explain. EECS140 Final Spring 2017 Name SID 1. [8] In a vacuum tube, the plate (or anode) current is a function of the plate voltage (output) and the grid voltage (input). I P = k(v P + µv G ) 3/2 where µ is a

More information

Lecture 20 Transistor Amplifiers (II) Other Amplifier Stages

Lecture 20 Transistor Amplifiers (II) Other Amplifier Stages Lecture 20 Transistor Amplifiers (II) Other Amplifier Stages Outline Common drain amplifier Common gate amplifier Reading Assignment: Howe and Sodini; Chapter 8, Sections 8.78.9 6.02 Spring 2009 . Common

More information

D n ox GS THN DS GS THN DS GS THN. D n ox GS THN DS GS THN DS GS THN

D n ox GS THN DS GS THN DS GS THN. D n ox GS THN DS GS THN DS GS THN Name: EXAM #3 Closed book, closed notes. Calculators may be used for numeric computations only. All work is to be your own - show your work for maximum partial credit. Data: Use the following data in all

More information

Radivoje Đurić, 2015, Analogna Integrisana Kola 1

Radivoje Đurić, 2015, Analogna Integrisana Kola 1 OTA-output buffer 1 According to the types of loads, the driving capability of the output stages differs. For switched capacitor circuits which have high impedance capacitive loads, class A output stage

More information

CMOS Analog Circuits

CMOS Analog Circuits CMOS Analog Circuits L8B: Common Source Amplifier with Actie Load- (9.8.3) B. Mazhari Dept. of EE, IIT Kanpur Problems with current design -.586 in 65k 50/ O -3.3 DD = 3.3 DD f 3dB. Although sufficient

More information

Week 9a OUTLINE. MOSFET I D vs. V GS characteristic Circuit models for the MOSFET. Reading. resistive switch model small-signal model

Week 9a OUTLINE. MOSFET I D vs. V GS characteristic Circuit models for the MOSFET. Reading. resistive switch model small-signal model Week 9a OUTLINE MOSFET I vs. V GS characteristic Circuit models for the MOSFET resistive switch model small-signal model Reading Rabaey et al.: Chapter 3.3.2 Hambley: Chapter 12 (through 12.5); Section

More information

d. Why do circuit designers like to use feedback when they make amplifiers? Give at least two reasons.

d. Why do circuit designers like to use feedback when they make amplifiers? Give at least two reasons. EECS105 Final 5/12/10 Name SID 1 /20 2 /30 3 /20 4 /20 5 /30 6 /40 7 /20 8 /20 Total 1. Give a short answer to each question a. Your friend from Stanford says that he has designed a three-stage high gain

More information

(a) Current-controlled and (b) voltage-controlled amplifiers.

(a) Current-controlled and (b) voltage-controlled amplifiers. Fig. 6.1 (a) Current-controlled and (b) voltage-controlled amplifiers. Fig. 6.2 Drs. Ian Munro Ross (front) and G. C. Dacey jointly developed an experimental procedure for measuring the characteristics

More information

Depletion-mode operation ( 공핍형 ): Using an input gate voltage to effectively decrease the channel size of an FET

Depletion-mode operation ( 공핍형 ): Using an input gate voltage to effectively decrease the channel size of an FET Ch. 13 MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor : I D D-mode E-mode V g The gate oxide is made of dielectric SiO 2 with e = 3.9 Depletion-mode operation ( 공핍형 ): Using an input gate voltage

More information

ANALOG FUNDAMENTALS C. Topic 4 BASIC FET AMPLIFIER CONFIGURATIONS

ANALOG FUNDAMENTALS C. Topic 4 BASIC FET AMPLIFIER CONFIGURATIONS AV18-AFC ANALOG FUNDAMENTALS C Topic 4 BASIC FET AMPLIFIER CONFIGURATIONS 1 ANALOG FUNDAMENTALS C AV18-AFC Overview This topic identifies the basic FET amplifier configurations and their principles of

More information

CSE 577 Spring Insoo Kim, Kyusun Choi Mixed Signal CHIP Design Lab. Department of Computer Science & Engineering The Penn State University

CSE 577 Spring Insoo Kim, Kyusun Choi Mixed Signal CHIP Design Lab. Department of Computer Science & Engineering The Penn State University CSE 577 Spring 2011 Basic Amplifiers and Differential Amplifier, Kyusun Choi Mixed Signal CHIP Design Lab. Department of Computer Science & Engineering The Penn State University Don t let the computer

More information

Basic Electronics Prof. Dr. Chitralekha Mahanta Department of Electronics and Communication Engineering Indian Institute of Technology, Guwahati

Basic Electronics Prof. Dr. Chitralekha Mahanta Department of Electronics and Communication Engineering Indian Institute of Technology, Guwahati Basic Electronics Prof. Dr. Chitralekha Mahanta Department of Electronics and Communication Engineering Indian Institute of Technology, Guwahati Module: 3 Field Effect Transistors Lecture-8 Junction Field

More information

Analysis and Design of Analog Integrated Circuits Lecture 6. Current Mirrors

Analysis and Design of Analog Integrated Circuits Lecture 6. Current Mirrors Analysis and Design of Analog Integrated Circuits ecture 6 Current Mirrors Michael H. Perrott February 8, 2012 Copyright 2012 by Michael H. Perrott All rights reserved. From ecture 5: Basic Single-Stage

More information

Electronic Devices. Floyd. Chapter 9. Ninth Edition. Electronic Devices, 9th edition Thomas L. Floyd

Electronic Devices. Floyd. Chapter 9. Ninth Edition. Electronic Devices, 9th edition Thomas L. Floyd Electronic Devices Ninth Edition Floyd Chapter 9 The Common-Source Amplifier In a CS amplifier, the input signal is applied to the gate and the output signal is taken from the drain. The amplifier has

More information

IFB270 Advanced Electronic Circuits

IFB270 Advanced Electronic Circuits IFB270 Advanced Electronic Circuits Chapter 9: FET amplifiers and switching circuits Prof. Manar Mohaisen Department of EEC Engineering Review of the Precedent Lecture Review of basic electronic devices

More information

SKEL 4283 Analog CMOS IC Design Current Mirrors

SKEL 4283 Analog CMOS IC Design Current Mirrors SKEL 4283 Analog CMOS IC Design Current Mirrors Dr. Nasir Shaikh Husin Faculty of Electrical Engineering Universiti Teknologi Malaysia Current Mirrors 1 Objectives Introduce and characterize the current

More information

DC Coupling: General Trends

DC Coupling: General Trends DC Coupling: General Trends * Goal: want both input and output to be centered at halfway between the positive and negative supplies (or ground, for a single supply) -- in order to have maximum possible

More information

Introduction to MOSFET MOSFET (Metal Oxide Semiconductor Field Effect Transistor)

Introduction to MOSFET MOSFET (Metal Oxide Semiconductor Field Effect Transistor) Microelectronic Circuits Introduction to MOSFET MOSFET (Metal Oxide Semiconductor Field Effect Transistor) Slide 1 MOSFET Construction MOSFET (Metal Oxide Semiconductor Field Effect Transistor) Slide 2

More information

ECE 442 Solid State Devices & Circuits. 15. Differential Amplifiers

ECE 442 Solid State Devices & Circuits. 15. Differential Amplifiers ECE 442 Solid State Devices & Circuits 15. Differential Amplifiers Jose E. Schutt-Aine Electrical & Computer Engineering University of Illinois jschutt@emlab.uiuc.edu ECE 442 Jose Schutt Aine 1 Background

More information

University of Pittsburgh

University of Pittsburgh University of Pittsburgh Experiment #4 Lab Report MOSFET Amplifiers and Current Mirrors Submission Date: 07/03/2018 Instructors: Dr. Ahmed Dallal Shangqian Gao Submitted By: Nick Haver & Alex Williams

More information

Field Effect Transistors

Field Effect Transistors Field Effect Transistors LECTURE NO. - 41 Field Effect Transistors www.mycsvtunotes.in JFET MOSFET CMOS Field Effect transistors - FETs First, why are we using still another transistor? BJTs had a small

More information

EECS3611 Analog Integrated Circuit Design. Lecture 3. Current Source and Current Mirror

EECS3611 Analog Integrated Circuit Design. Lecture 3. Current Source and Current Mirror EECS3611 Analog ntegrated Circuit Design Lecture 3 Current Source and Current Mirror ntroduction Before any device can be used in any application, it has to be properly biased so that small signal AC parameters

More information

Unit III FET and its Applications. 2 Marks Questions and Answers

Unit III FET and its Applications. 2 Marks Questions and Answers Unit III FET and its Applications 2 Marks Questions and Answers 1. Why do you call FET as field effect transistor? The name field effect is derived from the fact that the current is controlled by an electric

More information

Lecture 21: Voltage/Current Buffer Freq Response

Lecture 21: Voltage/Current Buffer Freq Response Lecture 21: Voltage/Current Buffer Freq Response Prof. Niknejad Lecture Outline Last Time: Frequency Response of Voltage Buffer Frequency Response of Current Buffer Current Mirrors Biasing Schemes Detailed

More information

Chapter 8 Differential and Multistage Amplifiers

Chapter 8 Differential and Multistage Amplifiers 1 Chapter 8 Differential and Multistage Amplifiers Operational Amplifier Circuit Components 2 1. Ch 7: Current Mirrors and Biasing 2. Ch 9: Frequency Response 3. Ch 8: Active-Loaded Differential Pair 4.

More information

Electronic Circuits II - Revision

Electronic Circuits II - Revision Electronic Circuits II - Revision -1 / 16 - T & F # 1 A bypass capacitor in a CE amplifier decreases the voltage gain. 2 If RC in a CE amplifier is increased, the voltage gain is reduced. 3 4 5 The load

More information

ECE315 / ECE515 Lecture 9 Date:

ECE315 / ECE515 Lecture 9 Date: Lecture 9 Date: 03.09.2015 Biasing in MOS Amplifier Circuits Biasing using Single Power Supply The general form of a single-supply MOSFET amplifier biasing circuit is: We typically attempt to satisfy three

More information

MOS IC Amplifiers. Token Ring LAN JSSC 12/89

MOS IC Amplifiers. Token Ring LAN JSSC 12/89 MO IC Amplifiers MOFETs are inferior to BJTs for analog design in terms of quality per silicon area But MO is the technology of choice for digital applications Therefore, most analog portions of mixed-signal

More information

UNIT-1 Bipolar Junction Transistors. Text Book:, Microelectronic Circuits 6 ed., by Sedra and Smith, Oxford Press

UNIT-1 Bipolar Junction Transistors. Text Book:, Microelectronic Circuits 6 ed., by Sedra and Smith, Oxford Press UNIT-1 Bipolar Junction Transistors Text Book:, Microelectronic Circuits 6 ed., by Sedra and Smith, Oxford Press Figure 6.1 A simplified structure of the npn transistor. Microelectronic Circuits, Sixth

More information

Field Effect Transistors (FET s) University of Connecticut 136

Field Effect Transistors (FET s) University of Connecticut 136 Field Effect Transistors (FET s) University of Connecticut 136 Field Effect Transistors (FET s) FET s are classified three ways: by conduction type n-channel - conduction by electrons p-channel - conduction

More information

Lab 6: MOSFET AMPLIFIER

Lab 6: MOSFET AMPLIFIER Lab 6: MOSFET AMPLIFIER NOTE: This is a "take home" lab. You are expected to do the lab on your own time (still working with your lab partner) and then submit your lab reports. Lab instructors will be

More information

Lecture 16. Complementary metal oxide semiconductor (CMOS) CMOS 1-1

Lecture 16. Complementary metal oxide semiconductor (CMOS) CMOS 1-1 Lecture 16 Complementary metal oxide semiconductor (CMOS) CMOS 1-1 Outline Complementary metal oxide semiconductor (CMOS) Inverting circuit Properties Operating points Propagation delay Power dissipation

More information

5. CMOS Gates: DC and Transient Behavior

5. CMOS Gates: DC and Transient Behavior 5. CMOS Gates: DC and Transient Behavior Jacob Abraham Department of Electrical and Computer Engineering The University of Texas at Austin VLSI Design Fall 2017 September 18, 2017 ECE Department, University

More information

Course Outline. 4. Chapter 5: MOS Field Effect Transistors (MOSFET) 5. Chapter 6: Bipolar Junction Transistors (BJT)

Course Outline. 4. Chapter 5: MOS Field Effect Transistors (MOSFET) 5. Chapter 6: Bipolar Junction Transistors (BJT) Course Outline 1. Chapter 1: Signals and Amplifiers 1 2. Chapter 3: Semiconductors 3. Chapter 4: Diodes 4. Chapter 5: MOS Field Effect Transistors (MOSFET) 5. Chapter 6: Bipolar Junction Transistors (BJT)

More information

Digital Electronics. Assign 1 and 0 to a range of voltage (or current), with a separation that minimizes a transition region. Positive Logic.

Digital Electronics. Assign 1 and 0 to a range of voltage (or current), with a separation that minimizes a transition region. Positive Logic. Digital Electronics Assign 1 and 0 to a range of voltage (or current), with a separation that minimizes a transition region Positive Logic Logic 1 Negative Logic Logic 0 Voltage Transition Region Transition

More information

ITT Technical Institute. ET215 Devices 1. Chapter

ITT Technical Institute. ET215 Devices 1. Chapter ITT Technical Institute ET215 Devices 1 Chapter 4.6 4.7 Chapter 4 Section 4.6 FET Linear Amplifiers Transconductance of FETs The output drain current is controlled by the input signal voltage. As we earlier

More information

Building Blocks of Integrated-Circuit Amplifiers

Building Blocks of Integrated-Circuit Amplifiers Building Blocks of ntegrated-circuit Amplifiers 1 The Basic Gain Cell CS and CE Amplifiers with Current Source Loads Current-source- or active-loaded CS amplifier Rin A o R A o g r r o g r 0 m o m o Current-source-

More information

EE 230 Lab Lab 9. Prior to Lab

EE 230 Lab Lab 9. Prior to Lab MOS transistor characteristics This week we look at some MOS transistor characteristics and circuits. Most of the measurements will be done with our usual lab equipment, but we will also use the parameter

More information

EEC 118 Lecture #11: CMOS Design Guidelines Alternative Static Logic Families

EEC 118 Lecture #11: CMOS Design Guidelines Alternative Static Logic Families EEC 118 Lecture #11: CMOS Design Guidelines Alternative Static Logic Families Rajeevan Amirtharajah University of California, Davis Jeff Parkhurst Intel Corporation Announcements Homework 5 this week Lab

More information

CS and CE amplifiers with loads:

CS and CE amplifiers with loads: CS and CE amplifiers with loads: The Common-Source Circuit The most basic IC MOS amplifier is shown in fig.(1). The source of MOS transistor is grounded, also the drain resistor RD replaced by a constant-current

More information

Multistage Amplifiers

Multistage Amplifiers Multistage Amplifiers Single-stage transistor amplifiers are inadequate for meeting most design requirements for any of the four amplifier types (voltage, current, transconductance, and transresistance.)

More information

Electronic Circuits for Mechatronics ELCT 609 Lecture 7: MOS-FET Amplifiers

Electronic Circuits for Mechatronics ELCT 609 Lecture 7: MOS-FET Amplifiers Electronic Circuits for Mechatronics ELCT 609 Lecture 7: MOS-FET Amplifiers Assistant Professor Office: C3.315 E-mail: eman.azab@guc.edu.eg 1 Enhancement N-MOS Modes of Operation Mode V GS I DS V DS Cutoff

More information

Keywords - Analog Multiplier, Four-Quadrant, FVF Differential Structure, Source Follower.

Keywords - Analog Multiplier, Four-Quadrant, FVF Differential Structure, Source Follower. Characterization of CMOS Four Quadrant Analog Multiplier Nipa B. Modi*, Priyesh P. Gandhi ** *(PG Student, Department of Electronics & Communication, L. C. Institute of Technology, Gujarat Technological

More information

Microelectronics Circuit Analysis and Design. MOS Capacitor Under Bias: Electric Field and Charge. Basic Structure of MOS Capacitor 9/25/2013

Microelectronics Circuit Analysis and Design. MOS Capacitor Under Bias: Electric Field and Charge. Basic Structure of MOS Capacitor 9/25/2013 Microelectronics Circuit Analysis and Design Donald A. Neamen Chapter 3 The Field Effect Transistor In this chapter, we will: Study and understand the operation and characteristics of the various types

More information

Current Mirrors. Basic BJT Current Mirror. Current mirrors are basic building blocks of analog design. Figure shows the basic NPN current mirror.

Current Mirrors. Basic BJT Current Mirror. Current mirrors are basic building blocks of analog design. Figure shows the basic NPN current mirror. Current Mirrors Basic BJT Current Mirror Current mirrors are basic building blocks of analog design. Figure shows the basic NPN current mirror. For its analysis, we assume identical transistors and neglect

More information

The Common Source JFET Amplifier

The Common Source JFET Amplifier The Common Source JFET Amplifier Small signal amplifiers can also be made using Field Effect Transistors or FET's for short. These devices have the advantage over bipolar transistors of having an extremely

More information

ECEN 474/704 Lab 6: Differential Pairs

ECEN 474/704 Lab 6: Differential Pairs ECEN 474/704 Lab 6: Differential Pairs Objective Design, simulate and layout various differential pairs used in different types of differential amplifiers such as operational transconductance amplifiers

More information

Analysis and Design of Analog Integrated Circuits Lecture 8. Cascode Techniques

Analysis and Design of Analog Integrated Circuits Lecture 8. Cascode Techniques Analysis and Design of Analog Integrated Circuits Lecture 8 Cascode Techniques Michael H. Perrott February 15, 2012 Copyright 2012 by Michael H. Perrott All rights reserved. Review of Large Signal Analysis

More information

ENEE 307 Laboratory#2 (n-mosfet, p-mosfet, and a single n-mosfet amplifier in the common source configuration)

ENEE 307 Laboratory#2 (n-mosfet, p-mosfet, and a single n-mosfet amplifier in the common source configuration) Revised 2/16/2007 ENEE 307 Laboratory#2 (n-mosfet, p-mosfet, and a single n-mosfet amplifier in the common source configuration) *NOTE: The text mentioned below refers to the Sedra/Smith, 5th edition.

More information

Frequently Asked Questions

Frequently Asked Questions Course: B.Sc. Applied Physical Science (Computer Science) Year & Sem.: Ist Year, Sem - IInd Subject: Electronics Paper No.: V Paper Title: Analog Circuits Lecture No.: 13 Lecture Title: Analog Circuits

More information

ECE315 / ECE515 Lecture 5 Date:

ECE315 / ECE515 Lecture 5 Date: Lecture 5 ate: 20.08.2015 MOSFET Small Signal Models, and Analysis Common Source Amplifier Introduction MOSFET Small Signal Model To determine the small-signal performance of a given MOSFET amplifier circuit,

More information

MOSFET Terminals. The voltage applied to the GATE terminal determines whether current can flow between the SOURCE & DRAIN terminals.

MOSFET Terminals. The voltage applied to the GATE terminal determines whether current can flow between the SOURCE & DRAIN terminals. MOSFET Terminals The voltage applied to the GATE terminal determines whether current can flow between the SOURCE & DRAIN terminals. For an n-channel MOSFET, the SOURCE is biased at a lower potential (often

More information

Homework 2 Solutions. Perform.op analysis, the small-signal parameters of M1 and M2 are shown below.

Homework 2 Solutions. Perform.op analysis, the small-signal parameters of M1 and M2 are shown below. Problem 1 Homework 2 Solutions 1) Circuit schematic Perform.op analysis, the small-signal parameters of M1 and M2 are shown below. Small-signal parameters of M1 gds = 9.723u gm = 234.5u region = 2 vds

More information

Differential Amplifiers. EE105 - Spring 2007 Microelectronic Devices and Circuits. Audio Amplifier Example. Small-Signal Model for Bipolar Transistor

Differential Amplifiers. EE105 - Spring 2007 Microelectronic Devices and Circuits. Audio Amplifier Example. Small-Signal Model for Bipolar Transistor EE105 - Spring 007 Microelectronic Devices and Circuits Lecture 8 Differential Amplifiers Differential Amplifiers General Considerations MOS Differential Pair Cascode Differential Amplifiers Common-Mode

More information

55:041 Electronic Circuits

55:041 Electronic Circuits 55:041 Electronic Circuits Mosfet Review Sections of Chapter 3 &4 A. Kruger Mosfet Review, Page-1 Basic Structure of MOS Capacitor Sect. 3.1 Width 1 10-6 m or less Thickness 50 10-9 m or less ` MOS Metal-Oxide-Semiconductor

More information

C H A P T E R 5. Amplifier Design

C H A P T E R 5. Amplifier Design C H A P T E 5 Amplifier Design The Common-Source Amplifier v 0 = r ( g mvgs )( D 0 ) A v0 = g m r ( D 0 ) Performing the analysis directly on the circuit diagram with the MOSFET model used implicitly.

More information

EECE2412 Final Exam. with Solutions

EECE2412 Final Exam. with Solutions EECE2412 Final Exam with Solutions Prof. Charles A. DiMarzio Department of Electrical and Computer Engineering Northeastern University Fall Semester 2010 My file 11480/exams/final General Instructions:

More information

Summary. Electronics II Lecture 5(b): Metal-Oxide Si FET MOSFET. A/Lectr. Khalid Shakir Dept. Of Electrical Engineering

Summary. Electronics II Lecture 5(b): Metal-Oxide Si FET MOSFET. A/Lectr. Khalid Shakir Dept. Of Electrical Engineering Summary Electronics II Lecture 5(b): Metal-Oxide Si FET MOSFET A/Lectr. Khalid Shakir Dept. Of Electrical Engineering College of Engineering Maysan University Page 1-21 Summary The MOSFET The metal oxide

More information

6.776 High Speed Communication Circuits Lecture 7 High Freqeuncy, Broadband Amplifiers

6.776 High Speed Communication Circuits Lecture 7 High Freqeuncy, Broadband Amplifiers 6.776 High Speed Communication Circuits Lecture 7 High Freqeuncy, Broadband Amplifiers Massachusetts Institute of Technology February 24, 2005 Copyright 2005 by Hae-Seung Lee and Michael H. Perrott High

More information

UNIT I BIASING OF DISCRETE BJT AND MOSFET PART A

UNIT I BIASING OF DISCRETE BJT AND MOSFET PART A UNIT I BIASING OF DISCRETE BJT AND MOSFET PART A 1. Why do we choose Q point at the center of the load line? 2. Name the two techniques used in the stability of the q point.explain. 3. Give the expression

More information

Operational Amplifiers

Operational Amplifiers CHAPTER 9 Operational Amplifiers Analog IC Analysis and Design 9- Chih-Cheng Hsieh Outline. General Consideration. One-Stage Op Amps / Two-Stage Op Amps 3. Gain Boosting 4. Common-Mode Feedback 5. Input

More information

55:041 Electronic Circuits

55:041 Electronic Circuits 55:041 Electronic Circuits MOSFETs Sections of Chapter 3 &4 A. Kruger MOSFETs, Page-1 Basic Structure of MOS Capacitor Sect. 3.1 Width = 1 10-6 m or less Thickness = 50 10-9 m or less ` MOS Metal-Oxide-Semiconductor

More information

The CMOS Inverter. Lecture 3a Static properties (VTC and noise margins)

The CMOS Inverter. Lecture 3a Static properties (VTC and noise margins) The CMOS Inverter Lecture 3a Static properties (VTC and noise margins) Why so much about inverters? The current that any CMOS logic gate can deliver or sink can be calculated from equivalent inverter!

More information

Lecture 030 ECE4430 Review III (1/9/04) Page 030-1

Lecture 030 ECE4430 Review III (1/9/04) Page 030-1 Lecture 030 ECE4430 Review III (1/9/04) Page 0301 LECTURE 030 ECE 4430 REVIEW III (READING: GHLM Chaps. 3 and 4) Objective The objective of this presentation is: 1.) Identify the prerequisite material

More information

Reading. Lecture 33: Context. Lecture Outline. Chapter 9, multi-stage amplifiers. Prof. J. S. Smith

Reading. Lecture 33: Context. Lecture Outline. Chapter 9, multi-stage amplifiers. Prof. J. S. Smith eading Lecture 33: Chapter 9, multi-stage amplifiers Prof J. S. Smith Context Lecture Outline We are continuing to review some of the building blocks for multi-stage amplifiers, including current sources

More information

CPE/EE 427, CPE 527 VLSI Design I CMOS Inverter. CMOS Inverter: A First Look

CPE/EE 427, CPE 527 VLSI Design I CMOS Inverter. CMOS Inverter: A First Look CPE/EE 427, CPE 527 VLSI Design I CMOS Inverter Department of Electrical and Computer Engineering University of Alabama in Huntsville Aleksandar Milenkovic CMOS Inverter: A First Look C L 9/11/26 VLSI

More information

Voltage Biasing Considerations (From the CS atom toward the differential pair atom) Claudio Talarico, Gonzaga University

Voltage Biasing Considerations (From the CS atom toward the differential pair atom) Claudio Talarico, Gonzaga University Voltage Biasing Considerations (From the CS atom toward the differential pair atom) Claudio Talarico, Gonzaga University Voltage Biasing Considerations In addition to bias currents, building a complete

More information

QUESTION BANK for Analog Electronics 4EC111 *

QUESTION BANK for Analog Electronics 4EC111 * OpenStax-CNX module: m54983 1 QUESTION BANK for Analog Electronics 4EC111 * Bijay_Kumar Sharma This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 4.0 Abstract

More information

Microelectronics Circuit Analysis and Design

Microelectronics Circuit Analysis and Design Neamen Microelectronics Chapter 4-1 Microelectronics Circuit Analysis and Design Donald A. Neamen Chapter 4 Basic FET Amplifiers Neamen Microelectronics Chapter 4-2 In this chapter, we will: Investigate

More information

Lecture 20 Transistor Amplifiers (II) Other Amplifier Stages. November 17, 2005

Lecture 20 Transistor Amplifiers (II) Other Amplifier Stages. November 17, 2005 6.012 Microelectronic Devices and Circuits Fall 2005 Lecture 20 1 Lecture 20 Transistor Amplifiers (II) Other Amplifier Stages November 17, 2005 Contents: 1. Common source amplifier (cont.) 2. Common drain

More information

Prof. Paolo Colantonio a.a

Prof. Paolo Colantonio a.a Prof. Paolo Colantonio a.a. 20 2 Field effect transistors (FETs) are probably the simplest form of transistor, widely used in both analogue and digital applications They are characterised by a very high

More information

Basic Circuits. Current Mirror, Gain stage, Source Follower, Cascode, Differential Pair,

Basic Circuits. Current Mirror, Gain stage, Source Follower, Cascode, Differential Pair, Basic Circuits Current Mirror, Gain stage, Source Follower, Cascode, Differential Pair, CCS - Basic Circuits P. Fischer, ZITI, Uni Heidelberg, Seite 1 Reminder: Effect of Transistor Sizes Very crude classification:

More information

Experiment #7 MOSFET Dynamic Circuits II

Experiment #7 MOSFET Dynamic Circuits II Experiment #7 MOSFET Dynamic Circuits II Jonathan Roderick Introduction The previous experiment introduced the canonic cells for MOSFETs. The small signal model was presented and was used to discuss the

More information

PESIT Bangalore South Campus

PESIT Bangalore South Campus INTERNAL ASSESSMENT TEST 2 Date : 19/09/2016 Max Marks: 40 Subject & Code : Analog and Digital Electronics (15CS32) Section: III A and B Name of faculty: Deepti.C Time : 8:30 am-10:00 am Note: Answer five

More information

LECTURE 7. OPERATIONAL AMPLIFIERS (PART 2)

LECTURE 7. OPERATIONAL AMPLIFIERS (PART 2) CIRCUITS by Ulaby & Maharbiz All rights reserved. Do not reproduce or distribute. LECTURE 7. OPERATIONAL AMPLIFIERS (PART 2) 07/16/2013 ECE225 CIRCUIT ANALYSIS All rights reserved. Do not copy or distribute.

More information