# Ppt on op amp circuits simulations

##### HSICE Simulation Guide Mixed Signal Chip Design Lab Department of Computer Science & Engineering The Penn State Univ.

) 2nd 4.0000 4th 16.0000 param sixteenth(x) 256.0000 HSPICE Output Insoo Kim Jan. 26, 2006.ALTER.ALTER  Rerun a simulation several times with different  Circuit Topology  Models  Library Components  Elements  Parameter Values  Options  Source stimulus  Analysis Variables  Print/Plot commands (must be /Transient Analysis *** HSPICE Netlist file for DIFF AMP Transient Analysis *** Created by ikim.option post.option ACC=1 BRIEF=1.param VDD=5.0v.global VDD!.temp 25.op.tans 0.1ns 100ns.print i(M5).meas/

##### Fundamentals of Electric Circuits Chapter 10 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

multiplication factor, the easier it is for the inverting stage to go out of the linear range. Thus the larger the multiplier, the smaller the allowable input voltage. A similar op amp circuit can simulate inductance, eliminating the need to have physical inductors in an IC. 17 Oscillators It is straightforward to imagine a DC voltage source. One typically thinks of a battery. But/

/K RLCarter: Analog IC Design with Self Heating54 Circuit used to measure the open loop gain [2] Use a feedback technique to determine the open loop gain DUT is the op amp to be tested Nulling op amp is connected in a feedback mode R1=100 R2=1M R3=1K Vmid=0 VSRC1 sweeps from 0 to 1V Simulation parameters: RLCarter: Analog IC Design with Self/

##### 1 High-Voltage High Slew-Rate Op-Amp Design Team Tucson: Erik Mentze Jenny Phillips Project Sponsor: Apex Microtechnology Project Advisors: Dave Cox Herb.

slew rate (1000 V/us) discrete op-amp 3 Specific Design Challenges Power Limitation (P=IV) High Voltage required Slew Rate = I/C c Output Voltage Limitations 4 Dr. Jekyll & Mr. Hyde “ Circuit theory has a dual character; it / that meet our design requirements Adapt chosen topology to meet physical requirements Simulate Implementation, comparing to Dr. Jekyll’s analytic models Implement design, comparing results to simulation and analytic models 6 Dr. Jekyll Two Theoretical Techniques to Improve Slew/

##### Pulse Width Modulation (PWM) LED Dimmer Circuit

of the capacitor (IC = 0V), the amount of electronic noise in the circuit, the degree to which your op amp is nonideal, and the RC time constant of the charging circuit for the capacitor. Square Wave with Offset Voltage 0-5V square wave Amplitude Reduction and Voltage Offset PSpice Simulation using Vpulse PSpice Simulation using Digclock Experimental Procedure First, construct and test the square wave generator/

##### REFERENCE CIRCUITS A reference circuit is an independent voltage or current source which has a high degree of precision and stability. Output voltage/current.

to change the type of the feedback With Cc=0, Phase Margin = 87.13 o Cc=1 pF, Phase Margin = 56.99 o Lower bandwidth BG Simulation for different diode current id=13uA Characterization of a bandgap circuit Assuming an ideal op amp with an infinite gain, we have V A = V B and I 1 = I 2. Schematic of the current-mode bandgap/

##### 1 Filters and Tuned Amplifiers. Microelectronic Circuits - Fifth Edition Sedra/Smith2 Copyright  2004 by Oxford University Press, Inc. Figure 12.1 The.

Edition Sedra/Smith23 Copyright  2004 by Oxford University Press, Inc. Figure 12.20 (a) The Antoniou inductance-simulation circuit. (b) Analysis of the circuit assuming ideal op amps. The order of the analysis steps is indicated by the circled numbers. 12.6.1 The Antoniou Inductance- Simulation Circuit Microelectronic Circuits - Fifth Edition Sedra/Smith24 Copyright  2004 by Oxford University Press, Inc. Figure 12.21 (a) An LCR resonator/

##### Circuit Design and Examples

the variable Which is Rvar here, the start and end values of the sweep and the increment for the sweep 12. Simulate 6 The circuit is shown in the lower right of the slide and the steps to create a graph of the voltage between node A / accuracy, and at low power and price. Note that for the homebrew circuit, the OP07 specifications for input voltage offset and noise have been multiplied by 2, because a three op amp type in-amp has two op amps at its inputs. AD620 vs opamp 13 This slide shows a page from/

##### Experiment 17 A Differentiator Circuit

flow through R1. If the difference in the voltage between the negative input terminal on the op amp and Vo varies a lot with time, C1 acts like a short circuit and all of the current through R2 and C1 will flow through C2 and the output / measurements. Just use the standard BNC-to-alligator or BNC-to-IC clip cables. All plots should be made using MatLAB. PSpice Simulation: AC Sweep Differentiator Gain Integrator Phase Shift --Dt -- Measurement of Phase Angle There are two sets of instructions in the Lab 8/

##### High-Voltage High Slew-Rate MOSFET Op-Amp Design 2005 Engineering Design Expo University of Idaho Erik J. Mentze Jennifer E. Phillips April 29, 2005 Project.

components that meet our design requirements Adapt chosen topology to meet physical requirements Simulate Implementation Attempt to Implement Design Significant Increase in Circuit Complexity! Theoretical Considerations Modern Amplifier Research Focus: Reducing Size of Frequency Compensation /-slew rate op-amp designs. DC Gain: 110dB Unity Gain Freq: 10MHz Slew-Rate: 2000 V/us Further testing of the prototype will be conducted by Apex in Tucson, Arizona Implementation in an integrated circuit form. Future/

##### Lab 8 Experiment 17 A Differentiator Circuit. Note Comment in Lab Manual All of the diagrams use a uA741 op amp. – You are to construct your circuits.

through R1. If the difference in the voltage between the negative input terminal on the op amp and Vo varies a lot with time, C1 acts like a short circuit and all of the current through R2 and C1 will flow through C2 and the output/PSpice Simulation: AC Sweep Differentiator Gain Integrator Phase Shift  t  Phase Shift as a Function of Frequency The phase shift between the input voltage and the output voltage of the op amp will change from 90 o to 180 o to 270 o as the operation of the circuit changes/

##### Chapter 1 Introduction to Electronics

7/1/03 Microelectronic Circuit Design McGraw-Hill Ideal Operation Amplifier (Op Amp) Ideal op amps are assumed to have infinite voltage gain, and infinite input resistance. These conditions lead to two assumptions useful in analyzing ideal op amp circuits: 1. The / of output voltage from 1000 case Monte Carlo simulation. See table 5.1 for complete results. Jaeger/Blalock 7/1/03 Microelectronic Circuit Design McGraw-Hill Temperature Coefficients Most circuit parameters are temperature sensitive. P=Pnom(1+1/

##### SONOLUMINESCENCE AND BUBBLE STABILITY CRITERION Ryan Pettibone Figure 1. Microphone Output at Resonance Figure 2. The Op-Amp Amplifier Figure 4. Bubble.

Op-Amp Amplifier Figure 4. Bubble Stability Plots Figure 3. Sample solutions for  (  ) oFill a clean spherical flask with distilled, degassed water. oGlue two transducers to the side of the flask to drive it, and one transducer to the bottom to be driven, acting as a “microphone.” o Suspend the flask so that it is able to vibrate freely. oConnect the circuit/ to the above differential equation with the above initial conditions was simulated with Mathematica. (See Figure 3 for sample solutions). oIf bubbles/

##### Lab #5 Overview Activity #1 - Simulation of an Op-Amp inverting amplifier Activity #2 - Build and Test the Op-Amp inverting amplifier Activity #3 - Determining.

Lab #5 Overview Activity #1 - Simulation of an Op-Amp inverting amplifier Activity #2 - Build and Test the Op-Amp inverting amplifier Activity #3 - Determining the Gain and Saturation of the Op-Amp inverting amplifier Simulation Run the simulated circuit found in the class folder (Lab_5_Circuit.msm) Notice that a negative voltage is used as the input to produce a positive output voltage The gain is the output divided by /

##### Chapter 1 Introduction to Electronics Microelectronic Circuit Design Richard C. Jaeger Travis N. Blalock Modified by Ming Ouhyoung Microelectronic Circuit.

. Microelectronic Circuit Design, 4E McGraw-Hill Chap 1 - 45 Ideal Operational Amplifier (Op Amp) Ideal op amps are assumed to have infinite voltage gain, and infinite input resistance. These conditions lead to two assumptions useful in analyzing ideal op-amp circuits: 1./distributed between 0 and 1. Microelectronic Circuit Design, 4E McGraw-Hill Chap 1 - 56 Monte Carlo Analysis Result Histogram of output voltage from 1000 case Monte Carlo simulation. WC Microelectronic Circuit Design, 4E McGraw-Hill Chap 1 /

##### CMOS Op-Amp Power Optimization in All Regions of Inversion Using Geometric Programming Pablo Aguirre and Fernando Silveira IIE – FING Universidad de la.

Conclusions SBCCI 2008Pablo Aguirre - Fernando Silveira3 Introduction Automatic analog circuit synthesis: since 1980s Broad classification of techniques: Simulation-based or Equation-based. Optimization methods: we want to assure a /op-amp via geometric programming," IEEE Trans. Comput.-Aided Design Integr. Circuits Syst., vol. 20, no. 1, pp. 1- 21, Jan. 2001. [Ma01] P. Mandal and V. Visvanathan, “Cmos op-amp sizing using a geometric programming formulation," IEEE Trans. Comput.-Aided Design Integr. Circuits/

##### Operational Amplifiers. What is an Op Amp? High voltage gain IC with differential inputs –Designed to have characteristics near ideal Inexpensive, widely.

: amplifier, buffer, summer, differentiator, integrator, comparator, instrumentation amp, Schmitt trigger, negative impedance, super diode, logarithmic/exponential output, simulated inductor History of Op Amps Originally designed for analog computers using vacuum tubes –Output voltage is/picture (K2-W with and without shell) History of Op Amps First transistor op amp (μA702) used 12 BJTs –Invented in 1964 by Bob Widlar –Sold for \$300 –Prone to short circuits μA709 improved on μA702 (used 14 transistors) –/

##### THE OP-AMP INTEGRATOR -THE IDEAL INTEGRATOR -HOW A CAPACITOR CHARGES -THE CAPACITOR VOLTAGE -THE OUTPUT VOLTAGE -RATE OF CHANGE OF THE OUTPUT VOLTAGE ANALOG.

IDEAL INTEGRATOR -HOW A CAPACITOR CHARGES -THE CAPACITOR VOLTAGE -THE OUTPUT VOLTAGE -RATE OF CHANGE OF THE OUTPUT VOLTAGE ANALOG CIRCUIT AND DEVICES EEE3123 MAAM KAMARUL ASYIKIN ASSIGNMENT 2 SHAHRUL IKHWAN BIN JAMALUDDIN (2110403) NOR IZUANDI BIN MAHADI (2110409)  The op-amp integrator simulates mathematical integration, which is basically a summing process that determines the total area under the curve of a function. -THE/

##### 1 Full Mission Simulation: Second Teleconference West Virginia University Rocketeers Student team: N. Barnett, R. Baylor, L. Bowman, M. Gramlich, C. Griffith,

1 Full Mission Simulation: Second Teleconference West Virginia University Rocketeers Student team: N. Barnett, R. Baylor, L. Bowman, M. Gramlich, C. Griffith, S. Majstorovic, D. Parks, B. Pitzer/RLC response At/near central frequencyFar from central frequency 7 Receiver: main filter (cont.) VCVS active filter (1 op amp): amplification over desired range, but broader rolloff than RLC High response near f 0 (~1.5 MHz) Circuit Rolloff example far from f 0 (here: 599 kHz) 8 Receiver: main filter (cont.) 1 st -/

##### Multisim Tutorial Basics of Schematic Capture [ Single Supply OP-Amp Simulation ] By James P. O’Rourke, D.Sc.

[ Single Supply OP-Amp Simulation ] By James P. O’Rourke, D.Sc. The purpose of the previous selection of slides is to give you a general idea where some items are in the menus along with some general information about the selected component. The next step in the process would be to actually layout an actual circuit and make some typical circuit measurements. The following/

##### SE207: Modeling and Simulation General instructions.

simulating systems analog computers are still used today in some applications Advantages of analog computers over digital computers Computation time Prototyping New technologies Single chip analog computers Digital computers with analog co-processors Operation Amplifier (Op-Amp) The op-amp is an electronic component The op-amp/ R f Input resistance R 1 eiei When R f =R 1 then e o = ─ e i The circuit acts as inverter ( signing the sign) Summer K Feedback resistance R f Input resistance R 1 e1e1 e3e3 e2e2 /

▶ slightly less negative than -1.5mV/ º C ▶ in practice accurate simulations are necessary 4. Temperature Independent Biasing University of Incheon– 18 – Chong-Gun Yu Compatibility with CMOS technology Realization of a pnp BJT in CMOS Bandgap reference circuit using pnp BJTs 4. Temperature Independent Biasing University of Incheon– 19 – Chong-Gun Yu Op-amp offset ▶ assume V OS is amplified and varies with T/

##### EEG CIRCUIT DESIGN NSF Project.

Chopper stabilized LNA (a) core topology and (b) complete topology Two-stage op-amp with embedded chopper-modulators used in CS-LNA Equivalent circuit model for CS-LNA EEG recordings in man Examples of records and results of/Understand and define design requirements Design description Behavioural simulation (Source code interpretation) Synthesis Functional or Gate level simulation Implementation Fitting Place and Route Timing or Post layout simulation Programming, Test and Debug Field Programmability Field /

##### Circuits II EE221 Unit 7 Instructor: Kevin D. Donohue Active Filters, Connections of Filters, and Midterm Project.

Useful Circuits: Describe the transfer functions of these circuits: Non-Inverting Op Amp: gain = (1 + R f / R 1 ) Inverting Op Amp: gain = (- R f / R 1 ) Voltage Follower: gain = 1 Cascading Filter Stages: no Loading Effects: Given two active filter circuits with /top-level. 3.Decide on the most feasible or promising design. 4.Develop solution(s) (build circuit protopypes or create computer simulations for testing). 5.Optimize critical parameters of the design(s). 6.Test design(s) against specifications/

##### Computer Aided Design Course 2. Setting up Analyses In order to measure a circuit performance, it is necessary to simulate its behavior. PSpice A/D is.

calculations in successive PSpice A/D simulations. Saving and restoring bias point calculations can decrease simulation times when large circuits are run multiple times and can / OP ) Currents, terminal voltages A list of the small-signal parameters for all nonlinear devices. At the final of Operating Point analysis the linearizing nonlinear circuit/ OF OUTPUT I(V_VSENS) ELEMENT ELEMENT ELEMENT NORMALIZED NAME VALUE SENSITIVITY SENSITIVITY (AMPS/UNIT) (AMPS/PERCENT) R_RE 3.300E+03 -2.869E-07 -9.466E-06 R_R3/

##### Operational amplifier

that this slope can not exceed a certain limit. Copyright © Mcgraw Hill Company Copyright © Mcgraw Hill Company Slewing in Op Amp Output resistant of OpAmp In the above case, if input is too large, output of the OpAmp can not change/OpAmp as possible. They are used to replace actual physical OpAmp for analysis and fast simulation. Important amplifier circuits I Inverting amplifer AC-coupled inverting amplifier Summing amplifier Noninverting amplifier AC-coupled noninverting amplifier Bootstrap AC-/

##### Wien-Bridge Oscillator Circuits. Why Look At the Wien-Bridge? It generates an oscillatory output signal without having any input source.

3 G = 2.9 G = 3.05 Ideal vs. Non-Ideal Op-Amp Red is the ideal op-amp. Green is the 741 op-amp. Making the Oscillations Steady Add a diode network to keep circuit around G = 3 If G = 3, diodes are off Making the Oscillations/ positive feedback network, the output frequency can be changed. Frequency Analysis Fast Fourier Transform of Simulation Frequency Analysis Due to limitations of the op-amp, frequencies above 1MHz are unachievable. Conclusions No Input Signal yet Produces Output Oscillations Can Output /

##### Electronic Circuits Laboratory EE462G Simulation Lab #9 The BJT Differential Amplifier.

Electronic Circuits Laboratory EE462G Simulation Lab #9 The BJT Differential Amplifier Differential Amplifier + V out1 _ The object of the differential amplifier is to amplify the difference between V in1 and V in2/ points in terms of circuit parameters. - V out1 + + V out2 - V in1 V in2 R C2 R C1 RERE I b1 I b2  I b2  I b1 V BE V CC V EE Where are the Q1 and Q2 transistor nodes on this model? Crude Op Amp A simple Op Amp can be create from the differential amp. Most Op Amps have additional stages to /

##### Lab 6: Filter Design Project ENG214: Circuit Analysis Laboratory Tim Laux, Eric Brokaw, Thomas Approvato, Alin Bojkovic The College of New Jersey December.

The op amp was powered by a ±12V supply The function generator was used to create the test frequencies The output was probed with the oscilloscope and the peak-to-peak voltage was recorded at each frequency 4.We created the circuit using LTSpice 5.We compared our experimental data with our calculated data using LTSpice Results Figure 13. Gain vs. Frequency Plot (Simulated/

##### Wien-Bridge Oscillator Circuits By Darren De Ronde May 15, 2002.

3 G = 2.9 G = 3.05 Ideal vs. Non-Ideal Op-Amp Red is the ideal op-amp. Green is the 741 op-amp. Making the Oscillations Steady Add a diode network to keep circuit around G = 3 If G = 3, diodes are off Making the Oscillations/ positive feedback network, the output frequency can be changed. Frequency Analysis Fast Fourier Transform of Simulation Frequency Analysis Due to limitations of the op-amp, frequencies above 1MHz are unachievable. Conclusions No Input Signal yet Produces Output Oscillations Can Output /

##### Calvin College Engineering Department Engineering 311 - Electronic Devices and Circuits Fall 2003 Professor:Paulo F. Ribeiro SB130 x 6407

Amplifiers Operation Amplifiers26 -The Ideal Amplifier -Circuits Containing Ideal Op-amps -Inverting and Non-inverting Configurations -Examples -Effect of Finite Open Loop Gain -Large-Signal Operation -DC Imperfections Diodes3 6 -The Ideal Diode -Terminal Characteristics of Junction Diodes -Physical Operation -Analysis of Diode Circuits -The Small-Signal Model -Zener Diodes -Rectifier Circuits -Limiting and Clamping Circuits -The PSpice Models and Simulation No classes on October 4, 7/

##### Computer Modeling of Electronic Circuits with LT SPICE PHYS3360/AEP3630 Lecture 20/21 1.

.end will be ignored Commands starting with dot (.ac,.end, etc.) are known as SPICE directives Circuit description SPICE directives 4 LTspice IV A freeware circuit simulator (Windows or *nix/Wine) Mac users: install http://winebottler.kronenberg.org/ Netlist syntax is powerful but/ assign the transistors to be 2N3904 and 2N3906 Note: you will find some familiar components missing (e.g. LM741 op-amp); you have to add them to LTspice All major manufacturers will have SPICE model files online 20 How to add /

##### Calvin College Engineering Department Engineering 311 - Electronic Devices and Circuits Fall 2002 Professor:Paulo F. Ribeiro SB130 x 6407

Amplifiers Operation Amplifiers26 -The Ideal Amplifier -Circuits Containing Ideal Op-amps -Inverting and Non-inverting Configurations -Examples -Effect of Finite Open Loop Gain -Large-Signal Operation -DC Imperfections Diodes3 6 -The Ideal Diode -Terminal Characteristics of Junction Diodes -Physical Operation -Analysis of Diode Circuits -The Small-Signal Model -Zener Diodes -Rectifier Circuits -Limiting and Clamping Circuits -The PSpice Models and Simulation No classes on October 4, 7/

##### Chapter 6 Differential and Multistage Amplifiers The most widely used circuit building block in analog integrated circuits. Use BJTs, MOSFETS and MESFETs.

semiconductor FET – read 5.12 – Gallium Arsenide-GaAs Device). Differential pair circuits are one of the most widely used circuit building blocks. The input stage of every op amp is a differential amplifier Basic Characteristics –Two matched transistors with emitters shorted together / common mode voltage gain, A V-cm, and then compared to the A V-cm predicted by the PSpice simulation and theoretical equations. From these values the common mode rejection ratio (CMRR) should be calculated for each case. /

##### Bandgap Reference Voltage SVTH:Đặng Thanh Tiền. Bandgap Reference Voltage  Abstract  Introduction  Circuit of the BGR  Simulation  Conclusion  References.

exact PSRR and reference voltages for certain values are depicted in the Table 1. Conclusion  A design using bandgap core circuit with Op amp and start-up circuit is presented and simulated.  The overall performance of the BGR circuit is summarized in the Table 2. Conclusion Conclusion  Comparisons with other design are shown in table 3. Conclusion References  [1] D. F. Hilbiber, “A new semiconductor voltage/

##### GLAST LAT Project CAL Peer Design Review, Mar 17-18, 2003 J. Ampe Naval Research Lab Washington DC GLAST Large Area Telescope Calorimeter Subsystem Gamma-ray.

corrupted by CMOS level digital signals through SMT Footprint Extender. Footprint extender used for Xilinx GCRC simulator –Jumpered sensitive signals around connector path to get circuits functioning –Used for testing VHDL Code in FPGA for GCRCv1, v2 and v3 submissions  /0 –Programmable DACs improved –Slow shaper R’s and C’s put on die –Preamp gain increased –Improved Shaper op-amp for lower noise –LVDS receiver current doubled for faster operation  GCFEv5 submitted Jan 02 –Changed chip pinout for addition/

##### Active Circuit Design 2 EE4314/ET4204 Dr Colin Fitzpatrick E2-011

1-2) Op amp characteristics (Wk 2-3) Op amp linear applications (Wk 3-5) Feedback (Wk 6) Op amp non-linear applications (Wk 7-9) Low frequency response (Wk 10) Analogue Signal Conversion (Wk 11-12) Recommended Texts & Information Neaman, “Electronic Circuit Analysis & / room Module Assessment Lab (25%) Presentation (10%) Terminal Exam (65%) Labs Attendance is compulsary All circuits must be built and simulated following the instructions in the notes Reports are due in one week after the lab is completed The /

##### 1 Experiments on Transient Oscillations in a Circuit of Diffusively Coupled Inverting Amplifiers Yo Horikawa Kagawa University, Japan.

neuron g: coupling gain (g > 0) τ: time constant 3 Long transient oscillations were observed in the network of even neurons (n = 2m) with random initial condition. Simulation (n = 40, g = 10.0, τ= 1.0, x i (0) ~ N(0, 0.1 2 ) (1 ≤ j ≤ 40) ) Demonstration It/g ≤ V in ≤ V p /g) V p (V in < -V p /g) ±V p : power supply of OP amp g: gain of inverting amplifiers FIGURE 1. Analog circuit of a ring neuron model. Input-output relation of inverting amplifiers 7 4. Experiment Number n of the amplifiers: 28, 32, 36, 40/

##### 1 Wicked Kool WRX Startup Circuit Sam Schoofs Kyle Schlansker.

destroy the microprocessor. 12 Circuit Schematics 13 High Current Switch 14 Simulation Output for MOSFET Gate 15 Safe Physical Implementation Op-Amp 16 Unsafe Physical Implementation Inverter-Battery hookup 17 Full “High Power” Test Setup Our version of “Chassis Ground” Digital Readout of Battery Voltage (12.2 V) Car Battery Test motherboard (Scott’s “strange” Tyan trinity) Photo FET Optocoupler Op-Amp circuit Motherboard Power Switch Scott/

##### Full Mission Simulation Test Report West Virginia University Rocketeers Students: N. Barnett, R. Baylor, L. Bowman, M. Gramlich, C. Griffith, S. Majstorovic,

Full Mission Simulation Test Report West Virginia University Rocketeers Students: N. Barnett, R. Baylor, L. Bowman, M. Gramlich, C. Griffith, S. Majstorovic, D. Parks, B./ into DC (right image). Two alternative designs (top images) were compared. 1. Analog circuit (detector with backdiode):2. AD637 converter: Green: high-pass filter Red: half wave rectifier Blue: low-pass filter Brown: AD8099 op amp w/ squaring FB loop Digital oscilloscope output illustrating half-wave rectification of AC input Test Results/

##### GCSE Electronic Products

) Pin 7 = discharge Empties the bucket (capacitor) Astable (The “flasher” circuit) Has no stable states Keeps on flashing forever Number of flashes per second = frequency Automatically triggers The Op-Amp - input = inverting + input = non-inverting used as an inverting amplifier /get the mold out Breadboard Used to model circuit using real component No soldering Easy to change connections Components can be re-used CAD (Computer Aided Design) Testing by simulation Links to CAM (Computer Aided Manufacture) /

##### Frequency Limits of InP-based Integrated Circuits 805-893-3244, 805-893-5705 fax Collaborators (III-V MOS) A. Gossard, S. Stemmer,

Dr. Zach Griffith 500 & 250 nm HBTs 150 GHz Logic 100 GHz op-amps Dr. Mark Wistey InGaAs MOSFET process technology theory / epi design THz Transistors/non-parabolic bands (variable m*) significantly increase feasible sheet charge Asbeck / Fischetti / Taur simulate drive currents much larger than for constant-m* model -- mobilities seem to be acceptable/scaling slides HBT scaling laws Goal: double transistor bandwidth when used in any circuit → keep constant all resistances, voltages, currents → reduce 2:1 all/

##### Monte Carlo Simulation in Statistical Design Kit

good Circuit improvements Monte Carlo simulation in statistical design kit - enlarge area factor at critical elements - add base current compensation - decrease current of differential amplifier to limit influence of beta variation - limit influence of early effect by cascode stages and dummy amps - revise the complete channel topology and gain chain (omit dummy OP stage) Redesign without dummy stage but OP design improved Monte Carlo simulation in/

##### Fault-Tolerant design of RF front-end circuits P.R. Mukund, Ph.D. Gleason Professor of Electrical Engineering Director, RF/Analog/Mixed-signal Lab (RAMLAB)

Q-factors Post fabrication processing is needed Analog/Digital techniques not relevant for RF circuits Novel fault-tolerance techniques for RF required ! Testing is expensive (ATE) /Mixer RF Digital Pin Placement Power Distribution Mixed Signal Analysis A/D and Op-Amp Analysis Inductor Modeling and Characterization Inductor Libraries for RF Design Vertically Integrated /temperature, nominal process. Fault-Tolerant Design of RF Front end Circuitry Simulation results - LNA Desired S 11 S 11 before correctio n S/

##### Op-Amps (2). Non-Inverting Amplifier Design Problem Design a non-inverting op-amp with a gain of 6. What is the approximate power supply if Vin must.

Design a non-inverting op-amp with a gain of 6. What is the approximate power supply if Vin must be kept between -1.5 V to 1.5 V ? Annotation Non-Inverting Amplifier VCC=9V VEE=-9 V VIN=0.5 V VOUT=3 V Set Up the Simulator for DC Sweep Probe /Vout Versus VB VA is held at 1 V Vout Versus VB What is the gain of this amplifier? Instrumentation Amplifier Application: ECG Circuits Power line noise at 60 Hz. ECG Signal on Oscilloscope 3 Bit Digital to Analog Converter 741 Op-Amp Chapter 5 Thevenin Equivalent/

##### Floating Inductors A single Generalised Impedance Convertor (GIC) can simulate a grounded inductor. This is fine for high-pass filters. The inductors in.

Drawback A floating inductor requires two GIC circuits, i.e. four op-amps. An N-th order low pass filter requires N/2 floating inductors = 2N op-amps. An N-th order high pass filter requires only N op-amps. Solution : Frequency Dependent Negative Resistors / and vice versa. Summary Two GICs can be used to simulate a floating inductor. A more efficient approach scales all impedances by 1/s. Then, the only components requiring synthesis are FDNRs. Op-amp requirements are one-per-pole (rather than two-per-pole /

##### Lecture on PSpice. Introduction to SPICE  SPICE was originally developed at the University of California, Berkeley (1975).  Simulation Program for Integrated.

Lecture on PSpice Introduction to SPICE  SPICE was originally developed at the University of California, Berkeley (1975).  Simulation Program for Integrated Circuits Emphasis  HSPICE = High-performance SPICE  PSpice = PC version of SPICE SPICE Functions  DC analysis: DC/  The node numbers used inside a subcircuit are strictly local, except for node 0 which is always global. Example: µ741 (Op Amp) * Subcircuit for 741 op amp * +in (=1) -in (=2) out (=3).subckt opamp741 1 2 3 rin 1 2 2meg rout 6 3 75 e14/

##### ELECTRONICS PRIMER II. Operational Amplfier Operational Amplifiers take small voltages and make them MUCH larger. Golden Rules (Op amp with negative feedback):

inputs are at the same voltage. Signal Conditioning Electrical engineers use operational amplifiers (Op Amps), resistors, capacitors, diodes, transistors, etc. to perform mathematical operations like Multiplication//circuits by means of electromagnetic waves generated by things such as electric motors, radio stations, electric outlets. The CBC’s digital circuits also serve as a noise source which may corrupt your sensor signals. Passive, RC, Lowpass Filter f 3dB = 1 / (2  RC) Lowpass Filter Simulation/

##### RF Systems Target Radio-Frequencies Wireless communication systems require specific radio- frequency integrated circuits, which often require optimum performances.

End - built around a high-speed ADC including Low- Noise Amplifiers (LNA), frequency synthesizers, and high-speed Op- Amps. The LNA boosts the RF signal from the antenna. The frequency synthesizer generates a Local Oscillator (LO) signal / power to run various functional blocks. Inductors High Quality Inductor Resonance Simulation of the Coil Inductors are commonly used for filtering, amplifying, or for creating resonant circuits used in radio-frequency applications. On-chip inductance have typical values /

##### Hands-on Electromagnetics: Microstrip Circuit and Antenna Design Laboratories at USU Cynthia Furse Ray Woodward Utah State University.

Design Software HP/ EEsof Series IV (“Libra”) / ADS –Microwave Circuit Design –“Momentum” method of moments simulation –Microwave Circuit Layout XFDTD Finite-Difference Time-Domain –General purpose EM design& analysis /op amp for proper modulation of the signal generator Lab 7 -- Computer Interface Receiver Receiving terminal Receive pin from serial cable Ground pin from serial cable must be common with sources LM 311 Comparator Connected to 2.4 GHz detector circuit Connected to 2.6 GHz detector circuit/