2. Single Stage OpAmps


 Bernard Kelly
 11 months ago
 Views:
Transcription
1 /74 2. Single Stage OpAmps Francesc Serra Graells Departament de Microelectrònica i Sistemes Electrònics Universitat Autònoma de Barcelona Integrated Circuits and Systems IMBCNM(CSIC)
2 2/74 The MonoTransistor Amplifier 2 Differential Topologies 3 Common Mode Feedback 4 Folded Amplifiers 5 Cascode Topologies 6 Gain Enhancement Techniques
3 3/74 The MonoTransistor Amplifier 2 Differential Topologies 3 Common Mode Feedback 4 Folded Amplifiers 5 Cascode Topologies 6 Gain Enhancement Techniques
4 4/74 SingleTransistor Topologies Operational voltage amplifier (OpAmp)? Currentdriven bias point to control circuit power Supposing forward saturation, drain is selected as output port due to its high impedance (CLM): Common source Common gate Back gate
5 5/74 SingleTransistor Topologies Operational voltage amplifier (OpAmp)? Currentdriven bias point to control circuit power Supposing forward saturation, drain is selected as output port due to its high impedance (CLM): Power efficiency Common source Common gate Back gate Moderate G m /I D Highest G m /I D Lowest G m /I D High input impedance Low input impedance Low input impedance Inverting amplifier Easier feedback Noninverting amplifier p+ n+ n+ Inverting amplifier Latchup Triplewell required
6 6/74 Voltage Transfer Curve Large signal analysis of common source amplifier: e.g. autobiasing operating in strong inversion and forward saturation: V B =0 unless specified CLM negligible in large signal in saturation in conduction
7 7/74 Gain and Frequency Response Common source small signal analysis: Incremental equivalent circuit: G D strong inversion and forward saturation bias point B S G D B S
8 8/74 Gain and Frequency Response Incremental equivalent circuit: DC voltage gain 3dB/oct 6dB/oct 3dB/oct In general, for CMOS amplifiers: strong inversion and forward saturation bias point input transconductance output resistance
9 9/74 Gain and Frequency Response Incremental equivalent circuit: Spectral bandwidth openloop closedloop 20dB/dec max. closedloop (i.e. follower) Frequency 0.5oct/oct strong inversion and forward saturation bias point 0.5oct/oct
10 0/74 Dynamic Range Noise equivalent circuit: Thermal noise contribution only (f > flicker corner): x0 (20dB) x (0dB) Time Uncorrelated phenomena and lowfrequency: Equivalent input noise:
11 /74 Dynamic Range Noise equivalent circuit: Thermal noise contribution only (f > flicker corner): x0 (20dB) x (0dB) Time Bandwidth Temperature Supply Power Dynamic Range.5dB/oct 3dB/oct
12 2/74 Full CMOS Circuit Similar performance analysis: Large signal VTC: in conduction in saturation All operating in strong inversion and forward saturation bias points: in saturation in conduction
13 3/74 Full CMOS Circuit Similar performance analysis: Small signal gain and bandwidth: 3dB/oct 6dB/oct 3dB/oct All operating in strong inversion and forward saturation bias points: 0.5oct/oct 0.5oct/oct
14 4/74 The MonoTransistor Amplifier 2 Differential Topologies 3 Common Mode Feedback 4 Folded Amplifiers 5 Cascode Topologies 6 Gain Enhancement Techniques
15 5/74 FullyDifferential vs SingleEnded Singleended OpAmps: Power rails resistive parasitics Digital Compact area and power Poor signal integrity Capacitive/inductive coupling parasitics Dynamic sources of interference: Large signals (e.g. digital states) Power supply currents EM fields Temperature gradients Mechanical stress
16 6/74 FullyDifferential vs SingleEnded Pseudodifferential OpAmps: Signal true info Digital Signal baseline only Interference rejection Area and power overheads (x2)
17 7/74 FullyDifferential vs SingleEnded Pseudodifferential OpAmps: Signal true info Digital Signal baseline only Interference rejection Area and power overheads (x2) Fullscale extension (+6dB) Noise increase (+3dB) SNR (+3dB) Time
18 8/74 FullyDifferential vs SingleEnded Pseudodifferential OpAmps: Signal true info Digital Signal baseline only Interference rejection Area and power overheads (x2) Fullscale extension (+6dB) Noise increase (+3dB) SNR (+3dB) Distortion cancellation (even harm.) Limited by device matching Time
19 9/74 FullyDifferential OpAmps Basic CMOS topology: : : M7 : 2 device multiplicity same aspect ratio
20 20/74 FullyDifferential OpAmps Basic CMOS topology: Differential input only: : : M7?? : 2 device multiplicity same aspect ratio
21 2/74 FullyDifferential OpAmps Basic CMOS topology: Differential input only: : : M7 : 2 device multiplicity 6 current mirror asymmetry Not full cancellation of unwanted terms same aspect ratio Mostly used for singleended signaling
22 22/74 FullyDifferential OpAmps All operating in strong inversion saturation + neglecting CLM Basic CMOS topology: Large signal VTC: : : M7 in conduction M7 M7 in saturation : 2 in saturation in conduction
23 23/74 FullyDifferential OpAmps All operating in strong inversion saturation + neglecting CLM Basic CMOS topology: Large signal VTC: : : M7 in conduction in saturation : 2 Reduced output range in saturation in conduction
24 24/74 FullyDifferential OpAmps All operating in strong inversion saturation + neglecting CLM Basic CMOS topology: Large signal VTC: : : M7 : 2 Reduced output range
25 25/74 FullyDifferential OpAmps All operating in strong inversion saturation + neglecting CLM Basic CMOS topology: Large signal VTC: : : M7 : 2 Reduced output range
26 26/74 FullyDifferential OpAmps All operating in strong inversion saturation + neglecting CLM Basic CMOS topology: Large signal VTC: : : M7 : 2 Prob. Reduced output range More offset contributions Pelgrom's Law Threshold voltage mismatching only
27 27/74 FullyDifferential OpAmps Basic CMOS topology: Small signal differential and common DC gains: : : M7 : 2
28 28/74 FullyDifferential OpAmps Basic CMOS topology: Small signal differential and common DC gains: : : M7 : 2 differential output common output differential input common input
29 29/74 FullyDifferential OpAmps Basic CMOS topology: Small signal differential and common DC gains: : : M7 Perfect matching (= and =M7): : 2 differential output differential input
30 30/74 FullyDifferential OpAmps Basic CMOS topology: Small signal differential and common DC gains: : : M7 Perfect matching (= and =M7): : 2 Real matching (e.g. V TH =V TH2 ): Neglecting common output
31 3/74 FullyDifferential OpAmps Basic CMOS topology: Summary of design guidelines: : : M7 : 2 Reduced output range Matching is critical performance resources
32 32/74 The MonoTransistor Amplifier 2 Differential Topologies 3 Common Mode Feedback 4 Folded Amplifiers 5 Cascode Topologies 6 Gain Enhancement Techniques
33 33/74 CommonMode Output Issue Singleended differential OpAmps: Fullydifferential OpAmps: e.g. max. feedback M7 High sensitivity to technology mismatching ( 7 and )! Welldefined and stable commonmode level Specific auxiliary control circuitry is needed in practice...
34 34/74 CommonMode Output Issue Commonmode feedback (CMFB) loop: Behaviorally equivalent... CMFB control functionality: Sensing commonmode output Computing error according to reference level Applying needed commonmode correction Not to be confused with CMRR! Multistage OpAmps require one CMFB loops for each stage CMFB control design? gain bandwidth accuracy stability
35 35/74 ContinuousTime CMFB Resistivebased sensing: Passive commonmode output estimation R R2
36 36/74 ContinuousTime CMFB Resistivebased sensing: Passive commonmode output estimation R R2 OpAmp original OR is preserved Resistive extra loading......or limited CMFB bandwidth
37 37/74 ContinuousTime CMFB Resistivebased sensing: M7 M8 R R2 Resistive loading is avoided OR severe reduction Power consumption overhead Commonmode output level is technology dependent!
38 38/74 ContinuousTime CMFB Resistivebased sensing: M7 M8 Masterslave automatic tuning R R2 M9 Resistive loading is avoided OR severe reduction Power consumption overhead Commonmode output level is technology dependent!
39 39/74 ContinuousTime CMFB Resistivebased sensing: Lowpass CMFB filtering C R R2 : 2 Compact circuit solution No power consumption overhead Commonmode output defined by technology Strong OR reduction
40 40/74 ContinuousTime CMFB MOSbased sensing: Supposing, and M7 working in deep conduction: M8 M9 0 By CMFB symmetry (=): x x2 M7 By bias symmetry ( 6=M7 and =): Masterslave tuning
41 4/74 ContinuousTime CMFB MOSbased sensing: Supposing, and M7 working in deep conduction: M8 M9 0 By CMFB symmetry (=): x x2 M7 By bias symmetry ( 6=M7 and =): Masterslave tuning Resistive loading is avoided No power consumption overhead Negligible OR reduction Technology compensation Gain nonlinearity
42 42/74 DiscreteTime CMFB Switchedcapacitor (SC) implementation: e.g. fullydifferential integrator stage clock C2P CP CN C2N
43 43/74 DiscreteTime CMFB Switchedcapacitor (SC) implementation: e.g. fullydifferential integrator stage clock M7 C2P CP CFP CFN CN C2N Capacitive CMFB sensing Reduced power overheads Low loopgain
44 44/74 The MonoTransistor Amplifier 2 Differential Topologies 3 Common Mode Feedback 4 Folded Amplifiers 5 Cascode Topologies 6 Gain Enhancement Techniques
45 45/74 Output Range Issue Basic fullydifferential topology (not showing CMFB): : : M7 : 2 Time OR improvement requires very large aspect ratios! Not compatible with other optimization rules (e.g. CMRR)
46 46/74 Folded Topologies Fullydifferential folded OpAmp (not showing CMFB): : :?? M7 M8 M9 0 : : 2 :
47 47/74 Folded Topologies All operating in strong inversion saturation + neglecting CLM Fullydifferential folded OpAmp (not showing CMFB): Still a single stage Opamp! lowimpedance nodes : : M7 M8 M9 0 : : 2 : Static power consumption (x2) Device silicon area (x2)
48 48/74 Folded Topologies All operating in strong inversion saturation + neglecting CLM Fullydifferential folded OpAmp (not showing CMFB): Still a single stage Opamp! lowimpedance nodes : : M7 M8 M9 0 : : 2 : Static power consumption (x2) Fullscale OR optimization Device silicon area (x2)
49 49/74 Folded Topologies All operating in strong inversion saturation + neglecting CLM Fullydifferential folded OpAmp (not showing CMFB): : : M7 M8 M9 0 : : 2 : Static power consumption (x2) Device silicon area (x2) Fullscale OR optimization High supply voltage needed...
50 50/74 Folded Topologies Fullydifferential dual folded OpAmp (not showing CMFB): : : 2 : 2 : M9 0 M7 M8 2 3 : 2 Static power consumption (x3) Device silicon area (x3)
51 5/74 Folded Topologies All operating in strong inversion saturation + neglecting CLM Fullydifferential dual folded OpAmp (not showing CMFB): : : 2 : 2 : Still a single stage Opamp! M9 lowimpedance nodes 0 Suposing: M7 M8 2 3 : 2 Static power consumption (x3) Device silicon area (x3) Same OR optimization Compatible with low supply voltage
52 52/74 Folded Topologies : : Singleended folded OpAmp counterparts: M7 M8 M9 0 : : : : 2 : M7 M8 : M9 2 0 :
53 53/74 Folded Topologies Singleended folded OpAmp counterparts: : : M9 2 : 2 : 0 M7 M8 2 3 : 2 : M9 : 2 : 2 0 M7 M8 2 3 : 2
54 54/74 The MonoTransistor Amplifier 2 Differential Topologies 3 Common Mode Feedback 4 Folded Amplifiers 5 Cascode Topologies 6 Gain Enhancement Techniques
55 55/74 Principle Basis CMOS OpAmp general linear model: input transconductance output resistance Enhancement by increasing MOSFET output impedance?
56 56/74 Principle Basis CMOS OpAmp general linear model: 20dB/dec Frequency input transconductance output resistance Gain improvement: Enhancement by increasing MOSFET output impedance? Accurate feedback functions Lower equivalent input noise No speed enhancement (GBW)
57 57/74 Principle of Operation Output impedance multiplier: Introducing cascoding in OpAmps: DC voltage biasing level cascode device transconductor device my device cascode device Aplicable to most analog basic building blocks (e.g. current mirror, voltage differential pair) voltage attenuation
58 58/74 Basic Cascode OpAmp Lowfrequency smallsignal analysis: CMOS OpAmp model:
59 59/74 Basic Cascode OpAmp Lowfrequency smallsignal analysis: CMOS OpAmp model:
60 60/74 Basic Cascode OpAmp Lowfrequency smallsignal analysis: CMOS OpAmp model: voltage gain factor! similar transconductance series combination voltage gain factor! higher output impedance output impedance of cascode device output impedance of transconductor device
61 6/74 Regulated Cascode OpAmp?? even larger attenuation factors!
62 62/74 Regulated Cascode OpAmp Lowfrequency smallsignal analysis: CMOS OpAmp model: even larger attenuation factors!
63 63/74 Regulated Cascode OpAmp Lowfrequency smallsignal analysis: CMOS OpAmp model: even larger attenuation factors! Minimalist implementation:
64 64/74 Output Range Optimization Basic cascode DC biasing: All operating in strong inversion saturation + neglecting CLM Regulated cascode DC biasing: supposing =: alternative lowvoltage approach: operating in strong inversion conduction
65 65/74 Practical Cascode OpAmps Fully differential + folded + cascode topology example: cascoding not needed here... optimized DC biasing M7 M8 M9 lowimpedance nodes dual cascoding required! 4 5 6
66 66/74 The MonoTransistor Amplifier 2 Differential Topologies 3 Common Mode Feedback 4 Folded Amplifiers 5 Cascode Topologies 6 Gain Enhancement Techniques
67 67/74 Principle Basis CMOS OpAmp general linear model: input transconductance output resistance Enhancement by increasing MOSFET input transconductance?
68 68/74 Principle Basis CMOS OpAmp general linear model: 20dB/dec Frequency input transconductance output resistance Gain improvement: Enhancement by increasing MOSFET input transconductance? Accurate feedback functions Lower equivalent input noise Speed enhancement (GBW)
69 69/74 Partial Positive Feedback Basic differential transconductor:
70 70/74 Partial Positive Feedback Basic differential transconductor: Introducing local positive feedback: Folded structure Crosscoupled pair Partial feedback design by sizing ratio keeping same large signal range : crosscoupled devices : /N /N : : M7 M8 lowimpedance nodes still a single stage transconductor...
71 7/74 Partial Positive Feedback Small signal transconductance: : : /N /N : : M7 M8
72 72/74 Partial Positive Feedback Small signal transconductance: Halfcircuit analysis: : : /N /N : : Perfect symmetry (no mismatching) Infinite tail sink resistance M7 M8 Purely differential input commonmode = virtual ground
73 73/74 Partial Positive Feedback Small signal transconductance: Halfcircuit analysis: : : /N /N : : Perfect symmetry (no mismatching) Infinite tail sink resistance M7 M8 Purely differential input
74 74/74 Practical Gain Enhanced OpAmp Singleended + folded + crosscoupled example: M7 M8 Larger gain and GBW Compatible with folding and cascoding M9 0 Local positive feedback vs global negative feedback: Prone to instability It can generate hysteresis
ANALYSIS AND DESIGN OF ANALOG INTEGRATED CIRCUITS
ANALYSIS AND DESIGN OF ANALOG INTEGRATED CIRCUITS Fourth Edition PAUL R. GRAY University of California, Berkeley PAUL J. HURST University of California, Davis STEPHEN H. LEWIS University of California,
More informationINF3410 Fall Book Chapter 6: Basic Opamp Design and Compensation
INF3410 Fall 2013 Compensation content Introduction Two Stage Opamps Compensation Slew Rate Systematic Offset Advanced Current Mirrors Operational Transconductance Amplifiers Current Mirror Opamps Folded
More informationSystem on a Chip. Prof. Dr. Michael Kraft
System on a Chip Prof. Dr. Michael Kraft Lecture 4: Filters Filters General Theory Continuous Time Filters Background Filters are used to separate signals in the frequency domain, e.g. remove noise, tune
More informationDesign of HighSpeed OpAmps for Signal Processing
Design of HighSpeed OpAmps for Signal Processing R. Jacob (Jake) Baker, PhD, PE Professor and Chair Boise State University 1910 University Dr. Boise, ID 837252075 jbaker@ieee.org Abstract  As CMOS
More informationChapter 5. Operational Amplifiers and Source Followers. 5.1 Operational Amplifier
Chapter 5 Operational Amplifiers and Source Followers 5.1 Operational Amplifier In single ended operation the output is measured with respect to a fixed potential, usually ground, whereas in doubleended
More informationBasic OpAmp Design and Compensation. Chapter 6
Basic OpAmp Design and Compensation Chapter 6 6.1 OpAmp applications Typical applications of OpAmps in analog integrated circuits: (a) Amplification and filtering (b) Biasing and regulation (c) Switchedcapacitor
More informationChapter 13: Introduction to Switched Capacitor Circuits
Chapter 13: Introduction to Switched Capacitor Circuits 13.1 General Considerations 13.2 Sampling Switches 13.3 SwitchedCapacitor Amplifiers 13.4 SwitchedCapacitor Integrator 13.5 SwitchedCapacitor
More informationRadivoje Đurić, 2015, Analogna Integrisana Kola 1
OTAoutput 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 informationOperational Amplifiers
Operational Amplifiers Table of contents 1. Design 1.1. The Differential Amplifier 1.2. Level Shifter 1.3. Power Amplifier 2. Characteristics 3. The Opamp without NFB 4. Linear Amplifiers 4.1. The NonInverting
More informationLOW SUPPLY VOLTAGE, LOW NOISE FULLY DIFFERENTIAL PROGRAMMABLE GAIN AMPLIFIERS
LOW SUPPLY VOLTAGE, LOW NOISE FULLY DIFFERENTIAL PROGRAMMABLE GAIN AMPLIFIERS A. Pleteršek, D. Strle, J. Trontelj Microelectronic Laboratory University of Ljubljana, Tržaška 25, 61000 Ljubljana, Slovenia
More informationA Novel Design of Low Voltage,Wilson Current Mirror based Wideband Operational Transconductance Amplifier
A Novel Design of Low Voltage,Wilson Current Mirror based Wideband Operational Transconductance Amplifier Kehul A. Shah 1, N.M.Devashrayee 2 1(Associative Prof., Department of Electronics and Communication,
More informationECEN 474/704 Lab 5: Frequency Response of Inverting Amplifiers
ECEN 474/704 Lab 5: Frequency Response of Inverting Amplifiers Objective Design, simulate and layout various inverting amplifiers. Introduction Inverting amplifiers are fundamental building blocks of electronic
More informationAtypical op amp consists of a differential input stage,
IEEE JOURNAL OF SOLIDSTATE CIRCUITS, VOL. 33, NO. 6, JUNE 1998 915 LowVoltage Class Buffers with Quiescent Current Control Fan You, S. H. K. Embabi, and Edgar SánchezSinencio Abstract This paper presents
More informationECEN 474/704 Lab 8: TwoStage Miller Operational Amplifier
ECEN 474/704 Lab 8: TwoStage Miller Operational Amplifier Objective Design, simulate and test a twostage operational amplifier Introduction Operational amplifiers (opamp) are essential components of
More informationRailToRail Output OpAmp Design with Negative Miller Capacitance Compensation
RailToRail OpAmp Design with Negative Miller Capacitance Compensation Muhaned Zaidi, Ian Grout, Abu Khari bin A ain Abstract In this paper, a twostage opamp design is considered using both Miller
More information2.996/6.971 Biomedical Devices Design Laboratory Lecture 7: OpAmps
2.996/6.971 Biomedical Devices Design Laboratory Lecture 7: OpAmps Instructor: Dr. Hong Ma Oct. 3, 2007 Fundamental Circuit: Source and Load Sources Power supply Signal Generator Sensor Amplifier output
More informationTradeoffs and Optimization in Analog CMOS Design
Tradeoffs and Optimization in Analog CMOS Design David M. Binkley University of North Carolina at Charlotte, USA A John Wiley & Sons, Ltd., Publication Contents Foreword Preface Acknowledgmerits List of
More informationA low voltage railtorail operational amplifier with constant operation and improved process robustness
Graduate Theses and Dissertations Graduate College 2009 A low voltage railtorail operational amplifier with constant operation and improved process robustness Rien Lerone Beal Iowa State University Follow
More informationDesigning Microphone Preamplifiers. Steve Green 24th AES UK Conference June 2011
Designing Microphone Preamplifiers Steve Green 24th AES UK Conference June 2011 This presentation is an abbreviated version of a tutorial given at the 2010 AES Conference in San Francisco. The complete
More informationLow Power and Fast Transient High Swing CMOS Telescopic Operational Amplifier
RESEARCH ARTICLE OPEN ACCESS Low Power and Fast Transient High Swing CMOS Telescopic Operational Amplifier Akshay Kumar Kansal 1, Asst Prof. Gayatri Sakya 2 Electronics and Communication Department, 1,2
More informationChapter 9: Operational Amplifiers
Chapter 9: Operational Amplifiers The Operational Amplifier (or opamp) is the ideal, simple amplifier. It is an integrated circuit (IC). An IC contains many discrete components (resistors, capacitors,
More informationCSE 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 informationDue to the absence of internal nodes, inverterbased GmC filters [1,2] allow achieving bandwidths beyond what is possible
A ForwardBodyBias Tuned 450MHz GmC 3 rd Order LowPass Filter in 28nm UTBB FDSOI with >1dBVp IIP3 over a 0.7to1V Supply Joeri Lechevallier 1,2, Remko Struiksma 1, Hani Sherry 2, Andreia Cathelin
More informationLecture 10: Accelerometers (Part I)
Lecture 0: Accelerometers (Part I) ADXL 50 (Formerly the original ADXL 50) ENE 5400, Spring 2004 Outline Performance analysis Capacitive sensing Circuit architectures Circuit techniques for nonideality
More informationLow Power OpAmp Based on Weak Inversion with MillerCascoded Frequency Compensation
Low Power OpAmp Based on Weak Inversion with MillerCascoded Frequency Compensation Maryam Borhani, Farhad Razaghian Abstract A design for a railtorail input and output operational amplifier is introduced.
More informationChapter 12 Opertational Amplifier Circuits
1 Chapter 12 Opertational Amplifier Circuits Learning Objectives 1) The design and analysis of the two basic CMOS opamp architectures: the twostage circuit and the singlestage, folded cascode circuit.
More informationA Compact Foldedcascode Operational Amplifier with ClassAB Output Stage
A Compact Foldedcascode Operational Amplifier with ClassAB Output Stage EEE 523 Advanced Analog Integrated Circuits Project Report Fuding Ge You are an engineer who is assigned the project to design
More informationA PSEUDOCLASSAB TELESCOPICCASCODE OPERATIONAL AMPLIFIER
A PSEUDOCLASSAB TELESCOPICCASCODE OPERATIONAL AMPLIFIER M. TaherzadehSani, R. Lotfi, and O. Shoaei ABSTRACT A novel classab architecture for singlestage operational amplifiers is presented. The structure
More informationGechstudentszone.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 informationCurrent 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 informationSimran Singh Student, School Of ICT Gautam Buddha University Greater Noida
An Ultra LowVoltage CMOS SelfBiased OTA Simran Singh Student, School Of ICT Gautam Buddha University Greater Noida simransinghh386@gmail.com Priyanka Goyal Faculty Associate, School Of ICT Gautam Buddha
More informationDAT175: Topics in Electronic System Design
DAT175: Topics in Electronic System Design Analog Readout Circuitry for Hearing Aid in STM90nm 21 February 2010 Remzi Yagiz Mungan v1.10 1. Introduction In this project, the aim is to design an adjustable
More informationVoltage Feedback Op Amp (VFOpAmp)
Data Sheet Voltage Feedback Op Amp (VFOpAmp) Features 55 db dc gain 30 ma current drive Less than 1 V head/floor room 300 V/µs slew rate Capacitive load stable 40 kω input impedance 300 MHz unity gain
More informationChapter 10 Feedback ECE 3120 Microelectronics II Dr. Suketu Naik
1 Chapter 10 Feedback Operational Amplifier Circuit Components 2 1. Ch 7: Current Mirrors and Biasing 2. Ch 9: Frequency Response 3. Ch 8: ActiveLoaded Differential Pair 4. Ch 10: Feedback 5. Ch 11: Output
More informationIN RECENT years, lowdropout linear regulators (LDOs) are
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: EXPRESS BRIEFS, VOL. 52, NO. 9, SEPTEMBER 2005 563 Design of LowPower Analog Drivers Based on SlewRate Enhancement Circuits for CMOS LowDropout Regulators
More informationBJT Circuits (MCQs of Moderate Complexity)
BJT Circuits (MCQs of Moderate Complexity) 1. The current ib through base of a silicon npn transistor is 1+0.1 cos (1000πt) ma. At 300K, the rπ in the small signal model of the transistor is i b B C r
More informationLecture 20: Passive Mixers
EECS 142 Lecture 20: Passive Mixers Prof. Ali M. Niknejad University of California, Berkeley Copyright c 2005 by Ali M. Niknejad A. M. Niknejad University of California, Berkeley EECS 142 Lecture 20 p.
More informationAnalysis and Design of Analog Integrated Circuits Lecture 20. Advanced Opamp Topologies (Part II)
Analysis and Design of Analog Integrated Circuits Lecture 20 Advanced Opamp Topologies (Part II) Michael H. Perrott April 15, 2012 Copyright 2012 by Michael H. Perrott All rights reserved. Outline of Lecture
More informationDesign and implementation of two stage operational amplifier
Design and implementation of two stage operational amplifier Priyanka T 1, Dr. H S Aravind 2, Yatheesh Hg 3 1M.Tech student, Dept, of ECE JSSATE Bengaluru 2Professor and HOD, Dept, of ECE JSSATE Bengaluru
More informationIC design for wireless system
IC design for wireless system Lecture 6 Dr. Ahmed H. Madian Ahmed.madian@guc.edu.eg 1 outlines Introduction to mixers Mixer metrics Mixer topologies Mixer performance analysis Mixer design issues Dr. Ahmed
More informationDesign of Low Voltage Low Power CMOS OPAMP
RESEARCH ARTICLE OPEN ACCESS Design of Low Voltage Low Power CMOS OPAMP Shahid Khan, Prof. Sampath kumar V. Electronics & Communication department, JSSATE ABSTRACT Operational amplifiers are an integral
More informationA highspeed CMOS current op amp for very low supply voltage operation
Downloaded from orbit.dtu.dk on: Mar 31, 2018 A highspeed CMOS current op amp for very low supply voltage operation Bruun, Erik Published in: Proceedings of the IEEE International Symposium on Circuits
More informationA Compact 2.4V Powerefficient Railtorail Operational Amplifier. Strong inversion operation stops a proposed compact 3V powerefficient
A Compact 2.4V Powerefficient Railtorail Operational Amplifier Abstract Strong inversion operation stops a proposed compact 3V powerefficient railtorail OpAmp from a lower total supply voltage.
More informationUNIT 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 informationAnalog Integrated Circuits Fundamental Building Blocks
Analog Integrated Circuits Fundamental Building Blocks Basic OTA/Opamp architectures Faculty of Electronics Telecommunications and Information Technology Gabor Csipkes Bases of Electronics Department Outline
More informationRail to rail CMOS complementary input stage with only one active differential pair at a time
LETTER IEICE Electronics Express, Vol.11, No.12, 1 5 Rail to rail CMOS complementary input stage with only one active differential pair at a time Maria Rodanas Valero 1a), Alejandro RomanLoera 2, Jaime
More information6.776 High Speed Communication Circuits and Systems Lecture 14 Voltage Controlled Oscillators
6.776 High Speed Communication Circuits and Systems Lecture 14 Voltage Controlled Oscillators Massachusetts Institute of Technology March 29, 2005 Copyright 2005 by Michael H. Perrott VCO Design for Narrowband
More informationLecture 3 SwitchedCapacitor Circuits Trevor Caldwell
Advanced Analog Circuits Lecture 3 SwitchedCapacitor Circuits Trevor Caldwell trevor.caldwell@analog.com Lecture Plan Date Lecture (Wednesday 24pm) Reference Homework 20170111 1 MOD1 & MOD2 ST 2, 3,
More informationAN1106 Custom Instrumentation Amplifier Design Author: Craig Cary Date: January 16, 2017
AN1106 Custom Instrumentation Author: Craig Cary Date: January 16, 2017 Abstract This application note describes some of the fine points of designing an instrumentation amplifier with opamps. We will
More informationSlewrate enhancement and trojan state avoiding for fullydifferential operational amplifier
Graduate Theses and Dissertations Graduate College 2015 Slewrate enhancement and trojan state avoiding for fullydifferential operational amplifier Chongli Cai Iowa State University Follow this and additional
More informationDESIGN AND VERIFICATION OF ANALOG PHASE LOCKED LOOP CIRCUIT
DESIGN AND VERIFICATION OF ANALOG PHASE LOCKED LOOP CIRCUIT PRADEEP G CHAGASHETTI Mr. H.V. RAVISH ARADHYA Department of E&C Department of E&C R.V.COLLEGE of ENGINEERING R.V.COLLEGE of ENGINEERING Bangalore
More informationMicroelectronic Circuits. Feedback Amplifiers. Slide 1. Lecture on Microelectronics Circuits. BITS Pilani, Dubai Campus. Dr. Vilas
Microelectronic Circuits Feedback mplifiers Slide 1 General Structure of Feedback Comparison Circuit / Mixer x o = x i ; x f = b x o ; x i = x s  x f ; f = (x o /x s ) = / (1+b). lso, x f = bx s / (1+b)
More informationMOSFET Amplifier Biasing
MOSFET Amplifier Biasing Chris Winstead April 6, 2015 Standard Passive Biasing: Two Supplies V D V S R G I D V SS To analyze the DC behavior of this biasing circuit, it is most convenient to use the following
More informationLSJ689. Linear Systems. Application Note. By Bob Cordell. Three Decades of Quality Through Innovation
Three Decades of Quality Through Innovation PChannel Dual JFETs Make HighPerformance Complementary Input Stages Possible Linear Systems Lower Current Noise Lower Bias Current Required LSJ689 Application
More informationLOWVOLTAGE operation and optimized powertoperformance
1068 IEEE JOURNAL OF SOLIDSTATE CIRCUITS, VOL. 40, NO. 5, MAY 2005 LowVoltage Super Class AB CMOS OTA Cells With Very High Slew Rate and Power Efficiency Antonio J. LópezMartín, Member, IEEE, Sushmita
More informationOperational Amplifier with TwoStage GainBoost
Proceedings of the 6th WSEAS International Conference on Simulation, Modelling and Optimization, Lisbon, Portugal, September 2224, 2006 482 Operational Amplifier with TwoStage GainBoost FRANZ SCHLÖGL
More informationPrecision, HighBandwidth Op Amp
EVALUATION KIT AVAILABLE MAX9622 General Description The MAX9622 op amp features railtorail output and MHz GBW at just 1mA supply current. At powerup, this device autocalibrates its input offset voltage
More informationDesign of Pipeline Analog to Digital Converter
Design of Pipeline Analog to Digital Converter Vivek Tripathi, Chandrajit Debnath, Rakesh Malik STMicroelectronics The pipeline analogtodigital converter (ADC) architecture is the most popular topology
More informationAn Improved Bandgap Reference (BGR) Circuit with Constant Voltage and Current Outputs
International Journal of Research in Engineering and Innovation Vol1, Issue6 (2017), 6064 International Journal of Research in Engineering and Innovation (IJREI) journal home page: http://www.ijrei.com
More informationInterface to the Analog World
Interface to the Analog World Liyuan Liu and Zhihua Wang 1 Sensoring the World Sensors or detectors are ubiquitous in the world. Everyday millions of them are produced and integrated into various kinds
More informationEFFICIENT DRIVER DESIGN FOR AMOLED DISPLAYS
EFFICIENT DRIVER DESIGN FOR AMOLED DISPLAYS CH. Ganesh and S. Satheesh Kumar Department of SENSE (VLSI Design), VIT University, Vellore India EMail: chokkakulaganesh@gmail.com ABSTRACT The conventional
More informationChapter 11. Differential Amplifier Circuits
Chapter 11 Differential Amplifier Circuits 11.0 ntroduction Differential amplifier or diffamp is a multitransistor amplifier. t is the fundamental building block of analog circuit. t is virtually formed
More informationMicroelectronic Circuits  Fifth Edition Sedra/Smith Copyright 2004 by Oxford University Press, Inc.
Feedback 1 Figure 8.1 General structure of the feedback amplifier. This is a signalflow diagram, and the quantities x represent either voltage or current signals. 2 Figure E8.1 3 Figure 8.2 Illustrating
More informationEECE488: Analog CMOS Integrated Circuit Design Set 7 Opamp Design
EECE488: Analog CMOS Integrated Circuit Design Set 7 Opamp Design References: Analog Integrated Circuit Design by D. Johns and K. Martin and Design of Analog CMOS Integrated Circuits by B. Razavi All figures
More informationECE 3110: Midterm I Review GAMESHOW!!!
October 2, 2008 Gameshow Rules Divide into two teams (down the middle). Each question is assigned a point value. First person to put their hand up gets the first shot at answering the question, if they
More informationEE 501 Lab 4 Design of two stage op amp with miller compensation
EE 501 Lab 4 Design of two stage op amp with miller compensation Objectives: 1. Design a two stage op amp 2. Investigate how to miller compensate a twostage operational amplifier. Tasks: 1. Build a twostage
More informationLecture #4 Basic OpAmp Circuits
Summer 2015 Ahmad ElBanna Faculty of Engineering Department of Electronics and Communications GEE336 Electronic Circuits II Lecture #4 Basic OpAmp Circuits Instructor: Dr. Ahmad ElBanna Agenda Some
More informationDesign and Layout of Two Stage High Bandwidth Operational Amplifier
Design and Layout of Two Stage High Bandwidth Operational Amplifier Yasir Mahmood Qureshi Abstract This paper presents the design and layout of a two stage, high speed operational amplifiers using standard
More informationA Unity Gain FullyDifferential 10bit and 40MSps SampleAndHold Amplifier in 0.18μm CMOS
A Unity Gain FullyDifferential 0bit and 40MSps SampleAndHold Amplifier in 0.8μm CMOS Sanaz Haddadian, and Rahele Hedayati Abstract A 0bit, 40 MSps, sample and hold, implemented in 0.8μm CMOS technology
More informationDESIGN OF A FULLY DIFFERENTIAL HIGHSPEED HIGHPRECISION AMPLIFIER
DESIGN OF A FULLY DIFFERENTIAL HIGHSPEED HIGHPRECISION AMPLIFIER Mayank Gupta mayank@ee.ucla.edu N. V. Girish envy@ee.ucla.edu Design I. Design II. University of California, Los Angeles EE215A Term Project
More informationIntroduction to Op Amps By Russell Anderson, BurrBrown Corp
Introduction to Op Amps By ussell Anderson, BurrBrown Corp Introduction Analog design can be intimidating. If your engineering talents have been focused in digital, software or even scientific fields,
More informationHow to turn an ADC into a DAC: A 110dB THD, 18mW DAC using sampling of the output and feedback to reduce distortion
How to turn an ADC into a DAC: A 110dB THD, 18mW DAC using sampling of the output and feedback to reduce distortion Axel Thomsen, Design Manager Silicon Laboratories Inc. Austin, TX 1 Why this talk? A
More informationThe Difference Amplifier Sept. 17, 1997
Physics 63 The Difference Amplifier Sept. 17, 1997 1 Purpose To construct a difference amplifier, to measure the DC quiescent point and to compare to calculated values. To measure the difference mode gain,
More informationSingle Supply, Rail to Rail Low Power FETInput Op Amp AD820
a FEATURES True Single Supply Operation Output Swings RailtoRail Input Voltage Range Extends Below Ground Single Supply Capability from + V to + V Dual Supply Capability from. V to 8 V Excellent Load
More informationAnalysis and Design of Analog Integrated Circuits Lecture 18. Key Opamp Specifications
Analysis and Design of Analog Integrated Circuits Lecture 8 Key Opamp Specifications Michael H. Perrott April 8, 0 Copyright 0 by Michael H. Perrott All rights reserved. Recall: Key Specifications of Opamps
More informationSecondOrder SigmaDelta Modulator in Standard CMOS Technology
SERBIAN JOURNAL OF ELECTRICAL ENGINEERING Vol. 1, No. 3, November 2004, 3744 SecondOrder SigmaDelta Modulator in Standard CMOS Technology Dragiša Milovanović 1, Milan Savić 1, Miljan Nikolić 1 Abstract:
More informationLecture 300 Low Voltage Op Amps (3/28/10) Page 3001
Lecture 300 Low Voltage Op Amps (3/28/10) Page 3001 LECTURE 300 LOW VOLTAGE OP AMPS LECTURE ORGANIZATION Outline Introduction Low voltage input stages Low voltage gain stages Low voltage bias circuits
More informationLowPower Linear Variable Gain Amplifier
LowPower Linear Variable Gain Amplifier Sauvik Das M.Tech, School of Electronics Engineering (VLSI Design) Vellore Institute of Technology, Vellore, Tamilnadu, 63204, India. Orcid Id: 0000000245985590
More informationSG2525A SG3525A REGULATING PULSE WIDTH MODULATORS
SG2525A SG3525A REGULATING PULSE WIDTH MODULATORS 8 TO 35 V OPERATION 5.1 V REFERENCE TRIMMED TO ± 1 % 100 Hz TO 500 KHz OSCILLATOR RANGE SEPARATE OSCILLATOR SYNC TERMINAL ADJUSTABLE DEADTIME CONTROL INTERNAL
More informationLowoutputimpedance BiCMOS voltage buffer
Lowoutputimpedance BiCMOS voltage buffer Johan Bauwelinck, a) Wei Chen, Dieter Verhulst, Yves Martens, Peter Ossieur, XingZhi Qiu, and Jan Vandewege Ghent University, INTEC/IMEC, Gent, 9000, Belgium
More informationLow Power SOC Sensor Interface Design for High Temperature Applications  Doctor of Philosophy Thesis Proposal
Low Power SOC Sensor Interface Design for High Temperature Applications  Doctor of Philosophy Thesis Proposal Nima Sadeghi nimas@ece.ubc.ca Department of Electrical and Computer Engineering University
More informationLowPower Pipelined ADC Design for Wireless LANs
LowPower Pipelined ADC Design for Wireless LANs J. Arias, D. Bisbal, J. San Pablo, L. Quintanilla, L. Enriquez, J. Vicente, J. Barbolla Dept. de Electricidad y Electrónica, E.T.S.I. de Telecomunicación,
More informationThe Aleph 5 is a stereo 60 watt audio power amplifier which operates in singleended class A mode.
Pass Laboratories Aleph 5 Service Manual Rev 0 9/20/96 Aleph 5 Service Manual. The Aleph 5 is a stereo 60 watt audio power amplifier which operates in singleended class A mode. The Aleph 5 has only two
More informationGATE: Electronics MCQs (Practice Test 1 of 13)
GATE: Electronics MCQs (Practice Test 1 of 13) 1. Removing bypass capacitor across the emitter leg resistor in a CE amplifier causes a. increase in current gain b. decrease in current gain c. increase
More informationDesign of Continuous Time Multibit Sigma Delta ADC for Next Generation Wireless Applications
RESEARCH ARTICLE OPEN ACCESS Design of Continuous Time Multibit Sigma Delta ADC for Next Generation Wireless Applications Sharon Theresa George*, J. Mangaiyarkarasi** *(Department of Information and Communication
More informationSingle Supply, Rail to Rail Low Power FETInput Op Amp AD820
a FEATURES True Single Supply Operation Output Swings RailtoRail Input Voltage Range Extends Below Ground Single Supply Capability from V to V Dual Supply Capability from. V to 8 V Excellent Load Drive
More informationOther useful blocks. Differentiator i = CdV/dt. = RCdV/dt or /v in. Summing amplifier weighted sum of inputs (consider currents)
Other useful blocks Differentiator i = CdV/dt = RCdV/dt or /v in = jωrc C R + Summing amplifier weighted sum of inputs (consider currents) v 1 R 1 v 2 v 3 R 3 + R f Differential amplifier = ( /R 1 )(v
More informationChapter 15 Goals. accoupled Amplifiers Example of a ThreeStage Amplifier
Chapter 15 Goals accoupled multistage amplifiers including voltage gain, input and output resistances, and smallsignal limitations. dccoupled multistage amplifiers. Darlington configuration and cascode
More informationDesign and Simulation of Low Dropout Regulator
Design and Simulation of Low Dropout Regulator Chaitra S Kumar 1, K Sujatha 2 1 MTech Student, Department of Electronics, BMSCE, Bangalore, India 2 Assistant Professor, Department of Electronics, BMSCE,
More informationEFFICIENT LOW POWER DYNAMIC COMPARATOR FOR HIGH SPEED ADC s
EFFICIENT LOW POWER DYNAMIC COMPARATOR FOR HIGH SPEED ADC s B.Padmavathi, ME (VLSI Design), Anand Institute of Higher Technology, Chennai, India krishypadma@gmail.com Abstract In electronics, a comparator
More informationE4332: VLSI Design Laboratory. Columbia University Spring 2005: Lectures
E4332: VLSI Design Laboratory Nagendra Krishnapura Columbia University Spring 2005: Lectures nkrishna@vitesse.com 1 AM radio receiver AM radio signals: Audio signals on a carrier Intercept the signal Amplify
More informationEVALUATION KIT AVAILABLE Precision, HighBandwidth Op Amp
19227; Rev ; 9/1 EVALUATION KIT AVAILABLE Precision, HighBandwidth Op Amp General Description The op amp features railtorail output and MHz GBW at just 1mA supply current. At powerup, this device
More informationDifference between BJTs and FETs. Junction Field Effect Transistors (JFET)
Difference between BJTs and FETs Transistors can be categorized according to their structure, and two of the more commonly known transistor structures, are the BJT and FET. The comparison between BJTs
More informationTuesday, February 1st, 9:15 12:00. Snorre Aunet Nanoelectronics group Department of Informatics University of Oslo
Bandgap references, sampling switches Tuesday, February 1st, 9:15 12:00 Snorre Aunet (sa@ifi.uio.no) Nanoelectronics group Department of Informatics University of Oslo Outline Tuesday, February 1st 11.11
More informationISSCC 2006 / SESSION 11 / RF BUILDING BLOCKS AND PLLS / 11.9
ISSCC 2006 / SESSION 11 / RF BUILDING BLOCKS AND PLLS / 11.9 11.9 A SingleChip Linear CMOS Power Amplifier for 2.4 GHz WLAN Jongchan Kang 1, Ali Hajimiri 2, Bumman Kim 1 1 Pohang University of Science
More informationRadivoje Đurić, 2015, Analogna Integrisana Kola 1
Railto torail OTA 1 Railtorail CMOS op amp Generally, railtorail amplifiers are useful in lowvoltage applications, where it is necessary to efficiently use the limited span offered by the power
More informationLow Voltage SC Circuit Design with Low  V t MOSFETs
Low Voltage SC Circuit Design with Low  V t MOSFETs Seyfi S. azarjani and W. Martin Snelgrove Department of Electronics, Carleton University, Ottawa Canada K1S56 Tel: (613)7638473, Email: seyfi@doe.carleton.ca
More informationPhysics 303 Fall Module 4: The Operational Amplifier
Module 4: The Operational Amplifier Operational Amplifiers: General Introduction In the laboratory, analog signals (that is to say continuously variable, not discrete signals) often require amplification.
More informationExperiment #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 informationIJSRD  International Journal for Scientific Research & Development Vol. 4, Issue 02, 2016 ISSN (online):
IJSRD  International Journal for Scientific Research & Development Vol. 4, Issue 02, 2016 ISSN (online): 23210613 Design & Analysis of CMOS Telescopic Operational Transconductance Amplifier (OTA) with
More information