The document discusses different types of comparators and their applications. It begins by explaining how a comparator works by comparing an input signal voltage to a reference voltage. It then describes two types of comparators - non-inverting and inverting - based on which input terminal receives the signal. Several applications of comparators are listed including zero crossing detectors, window comparators, and Schmitt triggers. The document goes on to explain these applications in more detail and discusses other comparator topics such as hysteresis and integrated circuit comparators.
The document discusses operational amplifiers (op-amps) and their use in integrator and differentiator circuits. It defines an op-amp as an integrated circuit that amplifies input signals through high gain. An integrator circuit uses an op-amp with a capacitor in feedback, resulting in an output voltage that is inversely proportional to time. A differentiator circuit contains a capacitor in the signal path, producing an output equal to the derivative of the input voltage. Practical implementations of these circuits are also described, along with their applications in areas like analog computing and signal processing.
Eeg381 electronics iii chapter 2 - feedback amplifiersFiaz Khan
This document discusses feedback amplifiers and the four basic feedback topologies:
1) Series-shunt feedback for voltage amplifiers
2) Shunt-series feedback for current amplifiers
3) Series-series feedback for transconductance amplifiers
4) Shunt-shunt feedback for transresistance amplifiers
It also covers negative feedback voltage amplifiers, including calculating closed-loop gain, gain desensitivity, and bandwidth extension due to feedback. An example problem is worked through to demonstrate these concepts.
The document provides information about operational amplifiers (op-amps). It defines an op-amp as a high-gain amplifier consisting of differential and other stages used to amplify signals and perform math functions. Key characteristics are very high differential gain, high input impedance, low output impedance. The document outlines op-amp components like inputs, outputs, power supplies. It describes stages within an op-amp like the input, intermediate, level shifting and output stages. Performance parameters discussed include input offset voltage, input resistance, open loop gain, output resistance and more. Closed loop and open loop op-amp configurations are explained.
This document discusses the design and characteristics of CMOS voltage comparators. It begins by defining the basic requirement of a comparator to compare an analog input voltage to a reference voltage and output a binary signal. It then covers comparator static characteristics like gain, offset voltage, resolution and noise. Dynamic characteristics of propagation delay and slew rate are also discussed. Different comparator circuit topologies like open-loop, regenerative and high-speed designs are presented. The document provides small-signal models of common comparator circuits and examines the effects of hysteresis. It concludes by presenting the typical architecture of high-speed comparators using preamplifier and latch stages to minimize propagation delay.
This presentation contains the basic information you need to know about operational amplifier.
I have tried to cover all the basic info. If anything is left out or you have any suggestions i will appreciate it.
Introduction to operational Amplifier. For A2 level physics (CIE). Discusses characteristics of op amp, inverting and non inverting amplifier, and voltage follower, and transfer characetristics, virtual earth , etc
An operational amplifier (op-amp) is an integrated circuit that can amplify or compare signals. It consists of transistors, resistors, and capacitors. Op-amps are used to build amplifiers, summers, integrators, differentiators, and comparators. They obey golden rules to make the difference between their input pins zero. Op-amps are also used in analog to digital converters, which sample analog signals and convert them to digital signals for processing.
The document discusses operational amplifiers (op-amps) and their use in integrator and differentiator circuits. It defines an op-amp as an integrated circuit that amplifies input signals through high gain. An integrator circuit uses an op-amp with a capacitor in feedback, resulting in an output voltage that is inversely proportional to time. A differentiator circuit contains a capacitor in the signal path, producing an output equal to the derivative of the input voltage. Practical implementations of these circuits are also described, along with their applications in areas like analog computing and signal processing.
Eeg381 electronics iii chapter 2 - feedback amplifiersFiaz Khan
This document discusses feedback amplifiers and the four basic feedback topologies:
1) Series-shunt feedback for voltage amplifiers
2) Shunt-series feedback for current amplifiers
3) Series-series feedback for transconductance amplifiers
4) Shunt-shunt feedback for transresistance amplifiers
It also covers negative feedback voltage amplifiers, including calculating closed-loop gain, gain desensitivity, and bandwidth extension due to feedback. An example problem is worked through to demonstrate these concepts.
The document provides information about operational amplifiers (op-amps). It defines an op-amp as a high-gain amplifier consisting of differential and other stages used to amplify signals and perform math functions. Key characteristics are very high differential gain, high input impedance, low output impedance. The document outlines op-amp components like inputs, outputs, power supplies. It describes stages within an op-amp like the input, intermediate, level shifting and output stages. Performance parameters discussed include input offset voltage, input resistance, open loop gain, output resistance and more. Closed loop and open loop op-amp configurations are explained.
This document discusses the design and characteristics of CMOS voltage comparators. It begins by defining the basic requirement of a comparator to compare an analog input voltage to a reference voltage and output a binary signal. It then covers comparator static characteristics like gain, offset voltage, resolution and noise. Dynamic characteristics of propagation delay and slew rate are also discussed. Different comparator circuit topologies like open-loop, regenerative and high-speed designs are presented. The document provides small-signal models of common comparator circuits and examines the effects of hysteresis. It concludes by presenting the typical architecture of high-speed comparators using preamplifier and latch stages to minimize propagation delay.
This presentation contains the basic information you need to know about operational amplifier.
I have tried to cover all the basic info. If anything is left out or you have any suggestions i will appreciate it.
Introduction to operational Amplifier. For A2 level physics (CIE). Discusses characteristics of op amp, inverting and non inverting amplifier, and voltage follower, and transfer characetristics, virtual earth , etc
An operational amplifier (op-amp) is an integrated circuit that can amplify or compare signals. It consists of transistors, resistors, and capacitors. Op-amps are used to build amplifiers, summers, integrators, differentiators, and comparators. They obey golden rules to make the difference between their input pins zero. Op-amps are also used in analog to digital converters, which sample analog signals and convert them to digital signals for processing.
This document discusses the characteristics and applications of operational amplifiers (op-amps). It begins with a block diagram showing the typical components of an op-amp, including the differential amplifier stage, intermediate stage, level shifting stage, and output stage. It then covers ideal and practical characteristics of op-amps such as high input impedance, low output impedance, high voltage gain, and finite bandwidth. Common op-amp configurations like the inverting and non-inverting amplifiers are explained. The document provides detailed descriptions and circuit diagrams to illustrate op-amp characteristics and applications.
1. The op-amp circuit consists of an input stage, intermediate stage, and output stage, as well as biasing circuits.
2. The input stage uses a differential amplifier configuration to provide high input impedance. The intermediate stage provides voltage gain.
3. The output stage is typically class AB to reduce crossover distortion, using a voltage source to provide constant base voltage for the transistors.
The document discusses the instrumentation amplifier (IA). It begins by introducing the IA, noting its high input impedance, precisely adjustable gain using a single resistor, and high common mode rejection. It then describes the two stages of an IA: the first offers high input impedance and sets the gain, while the second is a differential amplifier with feedback and grounding that offers very high input impedance. Applications discussed include using a thermistor in a bridge circuit with an IA to indicate temperature.
The operational amplifier, or op-amp, is a basic building block of analog electronic circuits that amplifies the difference between its input terminals. It has very high gain, typically around 100,000, and its output depends on the difference between the voltages at its two input terminals. By using negative feedback, most of the open-loop gain is canceled out, making the op-amp useful for various applications like non-inverting and inverting amplifiers, adders, integrators, and differentiators. An ideal op-amp has infinite gain, bandwidth, and input impedance and zero output impedance. Practical op-amps have limitations compared to the ideal but can still perform signal amplification and processing functions.
This presentation contains the basics of feedback, types of feedback connection & properties of the negative feedback amplifier. Numericals based on the properties are solved & given for practice.
This document discusses the basics of differential amplifiers. It defines differential amplifiers as circuits that amplify the difference between two input signals. It describes the differential gain, common mode gain, and common mode rejection ratio of differential amplifiers. It also outlines the four main configurations that differential amplifiers can have: dual input balanced output, dual input unbalanced output, single input balanced output, and single input unbalanced output. The document is intended as an introduction to differential amplifiers.
Hybrid model for Transistor, small signal AnalysisAbhishek Choksi
The document discusses transistor hybrid parameters (h-parameters) and their use in analyzing transistor circuits. It defines the four h-parameters - h11, h12, h21, h22 - for a two-port network. It describes how h-parameters are defined for common emitter, base, and collector configurations. The hybrid model allows representing a transistor as a dependent current source and voltage-controlled dependent voltage/current sources. The parameters help analyze small signal amplifiers by obtaining their current gain, input resistance, voltage gain, and output resistance.
This document discusses digital to analog converters (DACs). It explains that a DAC converts digital numbers into analog voltages or currents. The key components of a DAC are its digital input, analog output, and conversion process. Common DAC types include binary weighted resistor DACs and R-2R ladder DACs, which use resistors and switches to implement the conversion. Important DAC specifications are also outlined such as reference voltage, resolution, speed, settling time, and linearity. Common applications of DACs include function generators, digital oscilloscopes, and converting digital video signals to analog formats for display.
The document discusses an inverting amplifier, which uses an operational amplifier to amplify an input signal but inverts the phase of the output signal. An inverting amplifier applies a positive input voltage but produces a negative output voltage. It has a high gain that is determined by the ratio of the feedback resistance to the input resistance. The input is connected to the inverting terminal through a resistor R, while negative feedback is provided through a resistor Rf between the output and inverting input. This configuration produces an output signal that is 180 degrees out of phase with the input.
Oscillators introduction and its types, phase shift oscillators and wein bridge oscillators,difference between phase shift and wein bridge, frequency stability, oscillators principle and conditions, block diagram of oscillators, block diagram of phase shift oscillators
Differential amplifiers amplify the difference between two input signals while rejecting input signals that are common to both inputs. They have advantages like excellent stability, versatility, and immunity to noise and interference. The differential gain (Ad) is the gain with which the difference between the two input signals (V1-V2) is amplified to produce the output (Vo). The common mode gain (Ac) is the gain resulting from any common signals applied to both inputs. Differential amplifiers have high differential gain, low common mode gain, and high common mode rejection ratio (CMRR), which is the ratio of Ad/Ac expressed in decibels and indicates the ability to reject common mode signals.
1) The document discusses analog-to-digital converters (ADCs), including their basic function of converting continuous analog signals to discrete digital numbers.
2) It describes several types of ADCs - flash, successive approximation, dual slope, and delta-sigma - along with their relative speeds and costs.
3) The document then focuses on the ATD10B8C ADC present on the MC9S12C32 microcontroller, outlining its key features, registers, and how to set it up and use it to take single-channel or multi-channel conversions.
Comparator circuits compare two input voltages and produce a logic output signal that is high or low depending on which input is larger. Real comparators do not have an abrupt transition and have very high voltage gain in the transition region. Comparators are often used as interfaces between analog and digital circuits by converting analog signals to logic levels. Open-collector outputs are useful for this by producing either 0V or the supply voltage at their outputs. Schmitt triggers, which are comparators with positive feedback, are commonly used as they introduce hysteresis which helps eliminate unwanted output transitions from noise.
An operational amplifier (op-amp) is a differential amplifier that amplifies the difference between voltages at its two input terminals and provides a single-ended output. Op-amps are designed to have very high gain, very high input impedance, very low output impedance, and can be used as inverting or non-inverting amplifiers, summing amplifiers, subtractors, differentiators, integrators, and comparators. Common op-amp configurations include inverting and non-inverting amplifiers, summing amplifiers, subtractors, differentiators, integrators, and comparators.
This document provides an overview of phase locked loops (PLL) including:
1. The basic components of a PLL including a phase detector, low pass filter, and voltage controlled oscillator that work together in a closed loop to lock the output frequency and phase to the input signal.
2. Examples of PLL applications such as frequency multiplication, FM demodulation, and motor speed control.
3. A more detailed description of the 565 PLL IC including its pin configuration and characteristics such as operating frequency range and drift with temperature/voltage.
The document describes the operation of a dual slope analog-to-digital converter (ADC). It consists of an integrator, comparator, counter, and reference voltage. In dual slope ADC, the analog input voltage is integrated for a fixed time and compared against the counter. Then, a reference voltage is integrated in the opposite direction until the integrator output reaches zero, at which point the counter value represents the digital output. The speed is slow but accuracy is high, as it corrects for drifts in the integrator.
Comparator, Zero Crossing Detector and schmitt trigger using opampDivyanshu Rai
This document summarizes several comparator circuits that use operational amplifiers (OP-AMPs). It discusses the basic comparator, zero crossing detector, and Schmitt trigger. The basic comparator compares two analog voltages and outputs a saturated voltage based on which input is larger. A zero crossing detector converts a sine wave to a square wave by detecting when the input crosses zero. A Schmitt trigger adds positive feedback to the comparator, resulting in hysteresis where the output switches at different threshold voltages on the rising and falling edges of the input signal. Applications of these circuits include analog to digital conversion and noise immunity.
Bipolar junction transistors (BJTs) are three-terminal semiconductor devices consisting of two pn junctions. There are two types, NPN and PNP, depending on the order of doping. BJTs can operate as amplifiers and switches by controlling the flow of majority charge carriers through the base terminal. Proper biasing is required to operate the transistor in its active region between cutoff and saturation. Common configurations include common-base, common-emitter, and common-collector, each with different input and output characteristics. Maximum ratings like power dissipation and voltages must be considered for circuit design and temperature derating.
Presentation on Op-amp by Sourabh kumarSourabh Kumar
Visit Andro Root ( http:\\www.androroot.com ) for Tech. news and Smartphones.
Presentation on Op-amp(Operational Amplifier) by Sourabh kumar. B.tech Presentation,
This document discusses several basic applications of operational amplifiers (OP-AMPs), including comparators, summing amplifiers, integrators, differentiators, and instrumentation amplifiers. It provides details on how each circuit works, such as how comparators detect when an input voltage exceeds a reference voltage and how the output changes states. The document also discusses techniques for modifying these basic circuits, for example by adding hysteresis to reduce noise effects in comparators or setting reference voltages to detect non-zero levels. Application examples are provided for circuits like inverting integrators and differentiators.
The document discusses various applications of operational amplifiers including differentiation, integration, clipping, and clamping circuits. It provides circuit diagrams and explanations of how each circuit works. An op-amp can be used as a signal amplifier or in derivative and integral circuits. A differentiator produces an output equal to the derivative of the input, while an integrator produces an output equal to the integral of the input. Clippers and clampers modify the input signal by either clipping or shifting portions of the signal level.
This document discusses the characteristics and applications of operational amplifiers (op-amps). It begins with a block diagram showing the typical components of an op-amp, including the differential amplifier stage, intermediate stage, level shifting stage, and output stage. It then covers ideal and practical characteristics of op-amps such as high input impedance, low output impedance, high voltage gain, and finite bandwidth. Common op-amp configurations like the inverting and non-inverting amplifiers are explained. The document provides detailed descriptions and circuit diagrams to illustrate op-amp characteristics and applications.
1. The op-amp circuit consists of an input stage, intermediate stage, and output stage, as well as biasing circuits.
2. The input stage uses a differential amplifier configuration to provide high input impedance. The intermediate stage provides voltage gain.
3. The output stage is typically class AB to reduce crossover distortion, using a voltage source to provide constant base voltage for the transistors.
The document discusses the instrumentation amplifier (IA). It begins by introducing the IA, noting its high input impedance, precisely adjustable gain using a single resistor, and high common mode rejection. It then describes the two stages of an IA: the first offers high input impedance and sets the gain, while the second is a differential amplifier with feedback and grounding that offers very high input impedance. Applications discussed include using a thermistor in a bridge circuit with an IA to indicate temperature.
The operational amplifier, or op-amp, is a basic building block of analog electronic circuits that amplifies the difference between its input terminals. It has very high gain, typically around 100,000, and its output depends on the difference between the voltages at its two input terminals. By using negative feedback, most of the open-loop gain is canceled out, making the op-amp useful for various applications like non-inverting and inverting amplifiers, adders, integrators, and differentiators. An ideal op-amp has infinite gain, bandwidth, and input impedance and zero output impedance. Practical op-amps have limitations compared to the ideal but can still perform signal amplification and processing functions.
This presentation contains the basics of feedback, types of feedback connection & properties of the negative feedback amplifier. Numericals based on the properties are solved & given for practice.
This document discusses the basics of differential amplifiers. It defines differential amplifiers as circuits that amplify the difference between two input signals. It describes the differential gain, common mode gain, and common mode rejection ratio of differential amplifiers. It also outlines the four main configurations that differential amplifiers can have: dual input balanced output, dual input unbalanced output, single input balanced output, and single input unbalanced output. The document is intended as an introduction to differential amplifiers.
Hybrid model for Transistor, small signal AnalysisAbhishek Choksi
The document discusses transistor hybrid parameters (h-parameters) and their use in analyzing transistor circuits. It defines the four h-parameters - h11, h12, h21, h22 - for a two-port network. It describes how h-parameters are defined for common emitter, base, and collector configurations. The hybrid model allows representing a transistor as a dependent current source and voltage-controlled dependent voltage/current sources. The parameters help analyze small signal amplifiers by obtaining their current gain, input resistance, voltage gain, and output resistance.
This document discusses digital to analog converters (DACs). It explains that a DAC converts digital numbers into analog voltages or currents. The key components of a DAC are its digital input, analog output, and conversion process. Common DAC types include binary weighted resistor DACs and R-2R ladder DACs, which use resistors and switches to implement the conversion. Important DAC specifications are also outlined such as reference voltage, resolution, speed, settling time, and linearity. Common applications of DACs include function generators, digital oscilloscopes, and converting digital video signals to analog formats for display.
The document discusses an inverting amplifier, which uses an operational amplifier to amplify an input signal but inverts the phase of the output signal. An inverting amplifier applies a positive input voltage but produces a negative output voltage. It has a high gain that is determined by the ratio of the feedback resistance to the input resistance. The input is connected to the inverting terminal through a resistor R, while negative feedback is provided through a resistor Rf between the output and inverting input. This configuration produces an output signal that is 180 degrees out of phase with the input.
Oscillators introduction and its types, phase shift oscillators and wein bridge oscillators,difference between phase shift and wein bridge, frequency stability, oscillators principle and conditions, block diagram of oscillators, block diagram of phase shift oscillators
Differential amplifiers amplify the difference between two input signals while rejecting input signals that are common to both inputs. They have advantages like excellent stability, versatility, and immunity to noise and interference. The differential gain (Ad) is the gain with which the difference between the two input signals (V1-V2) is amplified to produce the output (Vo). The common mode gain (Ac) is the gain resulting from any common signals applied to both inputs. Differential amplifiers have high differential gain, low common mode gain, and high common mode rejection ratio (CMRR), which is the ratio of Ad/Ac expressed in decibels and indicates the ability to reject common mode signals.
1) The document discusses analog-to-digital converters (ADCs), including their basic function of converting continuous analog signals to discrete digital numbers.
2) It describes several types of ADCs - flash, successive approximation, dual slope, and delta-sigma - along with their relative speeds and costs.
3) The document then focuses on the ATD10B8C ADC present on the MC9S12C32 microcontroller, outlining its key features, registers, and how to set it up and use it to take single-channel or multi-channel conversions.
Comparator circuits compare two input voltages and produce a logic output signal that is high or low depending on which input is larger. Real comparators do not have an abrupt transition and have very high voltage gain in the transition region. Comparators are often used as interfaces between analog and digital circuits by converting analog signals to logic levels. Open-collector outputs are useful for this by producing either 0V or the supply voltage at their outputs. Schmitt triggers, which are comparators with positive feedback, are commonly used as they introduce hysteresis which helps eliminate unwanted output transitions from noise.
An operational amplifier (op-amp) is a differential amplifier that amplifies the difference between voltages at its two input terminals and provides a single-ended output. Op-amps are designed to have very high gain, very high input impedance, very low output impedance, and can be used as inverting or non-inverting amplifiers, summing amplifiers, subtractors, differentiators, integrators, and comparators. Common op-amp configurations include inverting and non-inverting amplifiers, summing amplifiers, subtractors, differentiators, integrators, and comparators.
This document provides an overview of phase locked loops (PLL) including:
1. The basic components of a PLL including a phase detector, low pass filter, and voltage controlled oscillator that work together in a closed loop to lock the output frequency and phase to the input signal.
2. Examples of PLL applications such as frequency multiplication, FM demodulation, and motor speed control.
3. A more detailed description of the 565 PLL IC including its pin configuration and characteristics such as operating frequency range and drift with temperature/voltage.
The document describes the operation of a dual slope analog-to-digital converter (ADC). It consists of an integrator, comparator, counter, and reference voltage. In dual slope ADC, the analog input voltage is integrated for a fixed time and compared against the counter. Then, a reference voltage is integrated in the opposite direction until the integrator output reaches zero, at which point the counter value represents the digital output. The speed is slow but accuracy is high, as it corrects for drifts in the integrator.
Comparator, Zero Crossing Detector and schmitt trigger using opampDivyanshu Rai
This document summarizes several comparator circuits that use operational amplifiers (OP-AMPs). It discusses the basic comparator, zero crossing detector, and Schmitt trigger. The basic comparator compares two analog voltages and outputs a saturated voltage based on which input is larger. A zero crossing detector converts a sine wave to a square wave by detecting when the input crosses zero. A Schmitt trigger adds positive feedback to the comparator, resulting in hysteresis where the output switches at different threshold voltages on the rising and falling edges of the input signal. Applications of these circuits include analog to digital conversion and noise immunity.
Bipolar junction transistors (BJTs) are three-terminal semiconductor devices consisting of two pn junctions. There are two types, NPN and PNP, depending on the order of doping. BJTs can operate as amplifiers and switches by controlling the flow of majority charge carriers through the base terminal. Proper biasing is required to operate the transistor in its active region between cutoff and saturation. Common configurations include common-base, common-emitter, and common-collector, each with different input and output characteristics. Maximum ratings like power dissipation and voltages must be considered for circuit design and temperature derating.
Presentation on Op-amp by Sourabh kumarSourabh Kumar
Visit Andro Root ( http:\\www.androroot.com ) for Tech. news and Smartphones.
Presentation on Op-amp(Operational Amplifier) by Sourabh kumar. B.tech Presentation,
This document discusses several basic applications of operational amplifiers (OP-AMPs), including comparators, summing amplifiers, integrators, differentiators, and instrumentation amplifiers. It provides details on how each circuit works, such as how comparators detect when an input voltage exceeds a reference voltage and how the output changes states. The document also discusses techniques for modifying these basic circuits, for example by adding hysteresis to reduce noise effects in comparators or setting reference voltages to detect non-zero levels. Application examples are provided for circuits like inverting integrators and differentiators.
The document discusses various applications of operational amplifiers including differentiation, integration, clipping, and clamping circuits. It provides circuit diagrams and explanations of how each circuit works. An op-amp can be used as a signal amplifier or in derivative and integral circuits. A differentiator produces an output equal to the derivative of the input, while an integrator produces an output equal to the integral of the input. Clippers and clampers modify the input signal by either clipping or shifting portions of the signal level.
Zero crossing detector detects how many times the input signal crossed the Zero value or Zero voltage level. Zero cross detector is basically a comparator circuit that compares the input sinusoidal signal or Sine wave signal with the zero voltage level, In other words, we can say that this detects the voltage changing from positive level to negative level and negative level to positive level. The output of the zero-cross detector changes when the input voltage crosses the zero level to High or High to zero.
The document discusses operational amplifiers and linear integrated circuits. It describes the ideal and practical characteristics of op-amps, including infinite input impedance, zero output impedance, and infinite gain in the ideal case. It also discusses various op-amp parameters such as common mode rejection ratio, input offset voltage, input bias current, and slew rate. The document then covers op-amp applications including difference amplifiers, integrators, differentiators, comparators, and timers. It provides examples of using the IC 555 in monostable and astable multivibrator circuits.
This document provides information on operation amplifiers (op-amps) including their ideal characteristics and common circuit configurations. It describes how op-amps can be used as inverting amplifiers, non-inverting amplifiers, summing amplifiers, differential amplifiers, and integrators/differentiators. Key points covered include the ideal properties of op-amps such as infinite gain and zero input impedance, as well as how negative feedback impacts closed-loop gain. Common applications of each circuit type are also discussed.
1. An operational amplifier (op-amp) is a circuit designed to boost low-level signals that has properties required for nearly ideal DC amplification. It is used for signal conditioning, filtering, and mathematical operations like addition, subtraction, integration, and differentiation.
2. An ideal op-amp has two high-impedance input terminals (inverting and non-inverting) and one output terminal. It aims to make the differential input voltage zero and have an infinite open-loop gain and output resistance.
3. Common op-amp circuits include the inverting amplifier, non-inverting amplifier, summing amplifier, differential amplifier, integrator, and differentiator. Each has a distinct configuration and mathematical
The document discusses operational amplifiers (op-amps). It begins by introducing op-amps and their typical uses which include mathematical operations and providing voltage/amplitude changes. It then describes the internal construction of op-amps and their packaging. The basic op-amp pin configurations and symbol are shown. The document goes on to explain the different types of op-amp inputs and their operations, including single-ended, double-ended, and common mode. It also covers the basic ideal and non-ideal op-amp operations. Finally, it discusses various op-amp applications such as inverting/noninverting amplifiers, summing amplifiers, difference amplifiers, controlled sources, instrumentation amplifiers, and active filters including low-
The document provides information about operational amplifiers (op-amps). It describes op-amps as high gain negative feedback amplifiers that can perform mathematical operations. It then discusses the symbol, pin diagram, and basic four-stage block diagram of typical op-amps. Key characteristics and parameters of op-amps are defined such as input impedance, output impedance, bandwidth, and more. Common op-amp configurations like inverting amplifiers, non-inverting amplifiers, and summing amplifiers are described along with their equations. Additional circuits including integrators, differentiators, timers, and monostable/astable multivibrators are summarized.
The document discusses various non-linear applications of operational amplifiers (op-amps), including hysteretic comparators, zero crossing detectors, square and triangular wave generators, precision rectifiers, and peak detectors. It provides circuit diagrams and explanations of how each application utilizes positive feedback or other non-linear techniques to generate output waveforms from input signals. The final section discusses monostable multivibrators, or "monoshots", showing a basic op-amp monostable circuit and its output signal behavior.
The document discusses operational amplifiers and their applications. It begins by defining an operational amplifier as a circuit that can perform mathematical operations like addition, subtraction, integration and differentiation. It then discusses the key components of an op-amp, including the differential amplifier input stage. Next, it defines a differential amplifier and describes its basic circuit. The rest of the document provides details on various op-amp applications, including integrators, differentiators, comparators, and multivibrators. It explains the circuitry and operation of each type of application.
The document discusses operational amplifiers and their ideal characteristics and common configurations. It describes the ideal op-amp as having infinite input impedance, zero output impedance, infinite gain, and zero offset between the input terminals. It then explains the inverting and non-inverting amplifier configurations using two resistors, and derives their closed-loop voltage gain formulas. Finally, it introduces the voltage follower configuration using one resistor with very high value and no feedback resistor, providing unity voltage gain.
The document provides details about operational amplifiers including:
1. Operational amplifiers are high-gain amplifiers used to perform computing or transfer functions like filtering. They have very high input impedance and low output impedance.
2. Common op-amp configurations include inverting and non-inverting amplifiers, comparators, integrators, differentiators, and more.
3. Op-amps can be used to simulate components like inductors through circuits like the inductance gyrator.
The document provides information on different configurations of operational amplifier (op-amp) circuits, including inverting amplifiers, non-inverting amplifiers, voltage followers, summing amplifiers, differential amplifiers, integrators, and differentiators. It explains how each circuit is constructed and its key characteristics, such as whether it inverts or non-inverts the input signal, and how the gain is determined based on feedback resistors. The document also provides equations for calculating the gain of each circuit configuration.
Electrical signal processing and transmissionBishal Rimal
The document discusses operational amplifiers and electrical signal processing. It begins by defining an operational amplifier as a differential amplifier that amplifies the difference between voltages at its two input terminals. It then discusses key characteristics of op-amps like input resistance, output resistance, and bandwidth. The document also covers op-amp configurations like inverting amplifiers, non-inverting amplifiers, and instrumentation amplifiers. It discusses applications of op-amps in signal amplification, integration, differentiation and noise reduction. Finally, it provides an overview of optical communication systems and how data is transmitted using optical fibers.
1) An operational amplifier (op-amp) is a voltage amplifying device designed to be used with external feedback components such as resistors.
2) An ideal op-amp has infinite gain, infinite input impedance, zero output impedance, zero offset voltage, and infinite bandwidth.
3) In practice, op-amps have finite gain, input and output impedances, offset voltages, and bandwidth. The 741 op-amp IC is a commonly used general purpose op-amp with a voltage gain of around 200,000.
1) The document discusses the Schmitt trigger circuit, which adds hysteresis to the input-output threshold levels of a comparator circuit using positive feedback. This prevents unwanted switching due to noise.
2) It describes the inverting and non-inverting Schmitt trigger circuits using an operational amplifier, explaining how the hysteresis windows are created through positive feedback.
3) Applications of the Schmitt trigger include converting sine waves to square waves by eliminating noise-induced switching near the threshold, and acting as simple on/off controllers for applications like temperature monitoring.
The document summarizes experiments on non-linear op-amp circuits, including a comparator, half-wave rectifier, and clipper. It provides the objectives, required equipment, pre-lab questions, and theoretical explanations of how each circuit works. The experiments involve assembling the circuits using op-amps and diodes, observing input and output waveforms on an oscilloscope, and analyzing the output characteristics as circuit parameters are varied. Key points covered include how comparators detect voltage levels, how rectifiers and clippers modify input signals based on reference voltages, and the roles of op-amp gain and diode properties.
- Operational amplifiers (op-amps) are voltage amplifying devices used as basic building blocks in analog electronic circuits.
- Op-amps use external feedback components like resistors and capacitors connected between the output and input terminals to determine the amplifier's function.
- Common op-amp configurations include inverting amplifiers, non-inverting amplifiers, voltage followers, summing amplifiers, and transimpedance amplifiers.
- Inverting amplifiers invert the phase of the input signal and have a closed-loop voltage gain determined by the ratio of the feedback and input resistors. Transimpedance amplifiers convert input current to output voltage.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
Low power architecture of logic gates using adiabatic techniquesnooriasukmaningtyas
The growing significance of portable systems to limit power consumption in ultra-large-scale-integration chips of very high density, has recently led to rapid and inventive progresses in low-power design. The most effective technique is adiabatic logic circuit design in energy-efficient hardware. This paper presents two adiabatic approaches for the design of low power circuits, modified positive feedback adiabatic logic (modified PFAL) and the other is direct current diode based positive feedback adiabatic logic (DC-DB PFAL). Logic gates are the preliminary components in any digital circuit design. By improving the performance of basic gates, one can improvise the whole system performance. In this paper proposed circuit design of the low power architecture of OR/NOR, AND/NAND, and XOR/XNOR gates are presented using the said approaches and their results are analyzed for powerdissipation, delay, power-delay-product and rise time and compared with the other adiabatic techniques along with the conventional complementary metal oxide semiconductor (CMOS) designs reported in the literature. It has been found that the designs with DC-DB PFAL technique outperform with the percentage improvement of 65% for NOR gate and 7% for NAND gate and 34% for XNOR gate over the modified PFAL techniques at 10 MHz respectively.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
8. A comparator compares a signal voltage on one input of
an opamp with a known reference voltage on the other
input. We can say A comparator has two inputs one is
usually a constant reference voltage VR and other is a
time varying signal Vi and one output VO. We know
that in an op-amp with an open loop configuration with
a differential or single input signal has a value greater
than 0, the high gain which goes to infinity drives the
output of the op-amp into saturation. Thus, an op-amp
operating in open loop configuration will have an
output that goes to positive saturation or negative
saturation level or switch between positive and negative
saturation levels. This principle is used in a comparator
circuit with two inputs and an output.
9.
10. Types of comparator
Depending on which input terminal
receives the signal input the
comparator are classified into two
categories:
Non inverting comparator
Inverting comparator
13. It is called a non-inverting comparator
circuit as the sinusoidal input signal Vin is
applied to the non-inverting terminal. The
fixed reference voltage Vref is connected to
the inverting terminal of the op-amp.
When the value of the input voltage Vin is
greater than the reference voltage Vref the
output voltage Vo goes to positive
saturation. This is because the voltage at the
non-inverting input is greater than the
voltage at the inverting input.
14. When the value of the input voltage Vin is
lesser than the reference voltage Vref, the
output voltage Vo goes to negative
saturation. This is because the voltage at the
non inverting input is smaller than the
voltage at the inverting input. Thus, output
voltage Vo changes from positive saturation
point to negative saturation point whenever
the difference between Vin and Vref
changes.
15. The comparator can be called a voltage level detector,
as for a fixed value of Vref, the voltage level of Vin
can be detected. The circuit diagram shows the diodes
D1and D2.
These two diodes are used to protect the op-amp from
damage due to increase in input voltage. These diodes
are called clamp diodes as they clamp the differential
input voltages to either 0.7V or -0.7V.
Most op-amps do not need clamp diodes as most of
them already have built in protection.
Resistance R1 is connected in series with input
voltage Vin and R is connected between the inverting
input and reference voltage Vref.
R1 limits the current through the clamp diodes and R
reduces the offset problem.
18. It is called a inverting comparator circuit as
the sinusoidal input signal Vin is applied to
the inverting terminal.
The fixed reference voltage Vref is given to
the non-inverting terminal (+) of the op-
amp. A potentiometer is used as a voltage
divider circuit to obtain the reference
voltage in the non-inverting input terminal.
Both ends of the Potentiometer are
connected to the dc supply voltage +VCC
and -VEE. The wiper is connected to the non
inverting input terminal.
19. When the wiper is moved to a value near +VCC,
Vref becomes more positive, and when the wiper is
moved towards -VEE, the value of Vref becomes
more negative. The waveforms are shown below.
21. The transfer characteristics are basically a graph of output
voltage versus input voltage. From the above characteristics, it
is observed that the reference voltage (or reference point) is the
point at which the state change occurs i.e. the transition from
one state to other state. In other words, the circuit is triggered at
the reference point hence it is also called as triggering point. The
reference voltage can be changed externally and also can be
either positive or negative as discussed above. Thus the
reference point can have a trip on input axis anywhere, and
hence it is also referred as trip point or trip voltage. Also at the
reference point the state change occurs at the output when input
signal crosses the reference voltage. Thus reference voltage is
also called as threshold voltage at which the comparator is
changing its output state.
22.
23. ZERO CROSSING
DETECTOR
The zero crossing detector circuit is an
important application of the op-amp
comparator circuit. It can also be called as the
sine to square wave converter. Anyone of the
inverting or non-inverting comparators can
be used as a zero-crossing detector. The only
change to be brought in is the reference
voltage with which the input voltage is to be
compared, must be made zero (Vref = 0V).
An input sine wave is given as Vin.
24.
25.
26. it detects the point where the input signal crosses
zero of the reference voltage level. For every crossing,
the saturation level of the output signal changes from
one to another.
the reference level is set at 0 and applied at the non-
inverting terminal of the op-amp. The sine wave
applied at the inverting terminal of the op-amp is
compared with the reference level each time the
phase of the wave changes either from positive to
negative or negative to positive.
27. Firstly, when positive half of the
sinusoidal signal appears at the input.
Then the op-amp comparator compares
the reference voltage level with the
peak level of the applied signal
28. in case of the negative half of the sinusoidal signal,
the op-amp comparator again compares the reference
voltage level with the peak of the applied signal.
As this time the circuit is dealing with negative half
of the signal, thus the peak will have a negative
polarity.
29. It can be seen in the above waveform that whenever
the sine wave crosses zero, the output of the Op-
amp will shift either from negative to positive or
from positive to negative.
It shifts negative to positive when sine wave
crosses positive to negative and vice versa. This is
how a Zero Crossing Detector detects when the
waveform is crossing zero every time. As you can
observe that the output waveform is a square wave,
so a Zero Crossing Detector is also called a Square
wave Generator Circuit.
31. Limitations:
If the input to a comparator contains noise, the output may
show error when Vin is near a trip point.
For instance, with a zero crossing, the output is low when vin
is positive and high when vin is negative. If the input
contains a noise voltage with a peak of 1mV or more, then the
comparator will detect the zero crossing produced by the
noise. Figure below, shows the output of zero crossing
detector if the input contains noise.
32.
33.
34. Operation:
Case I:Vin<VLT & Vin<VUT
With the above two conditions, output of op-amp A1 is negative (i.e. -
Vsat) which will make the diode D1 reverse biased. Similarly output of
op-amp A2 is positive (i.e. +Vsat) which will make the diode D2
forward biased. The positive voltage, +Vsat is now applied through
potential divider formed by resistance R1 and R2 to a base of transistor
Q. Due to the positive voltage at base the npn transistor Q moves into
the saturation. Thus the output voltage is zero.
Thus upto VLT output voltage is zero.
Case II:Vin>VLT & Vin>VUT
With the above two conditions, output of op-amp A1 is positive (i.e.
+Vsat) which will make the diode D1 forward biased. Similarly output
of op-amp A2 is negative (i.e. -Vsat) which will make the diode D2
reverse biased.
The positive voltage, +Vsat is now applied through potential divider
formed by resistance R1 and R2 to a base of transistor Q. Due to the
positive voltage at base the npn transistor Q moves into the saturation.
Thus the output voltage is zero.
Thus above VUT output voltage is zero.
35. Case III:VLT<Vin<VUT
With this combined condition, both the op-amps A1
and A2 goes into negative saturation (i.e. -Vsat). Both
the diodes are reverse biased. So there is no voltage
applied for transistor Q. Thus transistor is in cut-off
and there no collector current and hence no drop
across resistance R. Thus the output voltage is
∴Vo=+5V
Thus between VLT and VUT (window of two
voltages) output voltage is high i.e. +5V and outside
this window it is zero. Therefore the circuit is called
as a window detector or comparator.
The transfer characteristic of such a window
comparator is shown below.
36.
37. IC Comparators
OPAMP IC 741 has slew rate equal to 0.5 v/µs which
is too low for its use as a comparator.
Specially designed IC are LM311,LM339 etc.
Feature:
1. Fast switching speed due to higher slew rate
2. Output is compatible with any digital IC family
3. They have built in noise immunity .
38. LM 710 Voltage
comparator
General Description:
The LM710 series are high-speed voltage
comparators intended for use as an accurate, low-
level digital level sensor or as a replacement for
operational amplifiers in comparator applications
where speed is of prime importance. The circuit has
a differential input and a single-ended output, with
saturated output levels compatible with practically
all types of integrated logic. The device is built on a
single silicon chip which insures low offset and
thermal drift.
39.
40. Features and applications
Features:
1. High accuracy
2. High speed
3. Low response time
4. Low cost
Applications:
1. Schmitt trigger
2. ADC
3. Level detector
4. Pulse width modulator
41. Schmitt trigger(Regenerative
comparator)
Comparator which use the positive feedback is
known as the Schmitt trigger or regenerative
comparators.
Types of Schmitt trigger:
1. Inverting Schmitt trigger
2. Non inverting Schmitt trigger
42. Inverting Schmitt trigger
Inverting Schmitt Trigger, the input is applied to the
inverting terminal of the Op-Amp. In this mode, the
output produced is of opposite polarity. This output
is applied to non-inverting terminal to ensure
positive feedback.
43. When VIN is slightly greater than VREF, the output becomes -
VSAT and if VIN is slightly less that -VREF (more negative than -
VREF), then output becomes VSAT. Hence, the output voltage
VO is either at VSAT or -VSAT and the input voltage at which these
state changes occur can be controlled using R1 and R2.
The values of VREF and -VREF can be formulated as follows:
VREF = (VO * R2) / (R1 + R2)
But VO = VSAT .
Hence,
VREF = (VSAT * R2) / (R1 + R2)
-VREF = (VO * R2) / (R1 + R2)
But VO = -VSAT . Hence,
-VREF = (-VSAT * R2) / (R1 + R2)
44. The reference voltages VREF and -VREF are called
Upper Threshold Voltage VUT and Lower Threshold
Voltage VLT. The following image shows the output
voltage versus input voltage graph. It is also known
as the Transfer Characteristic of Schmitt Trigger.
45. Non-Inverting Schmitt Trigger
Circuit
Coming to Non-Inverting Schmitt Trigger, the input
in this case is applied to the non-inverting input
terminal of the Op-Amp. The output voltage is fed
back to the non-inverting terminal through the
resistor R1.
46. Let us assume that initially, the output voltage is at VSAT. Until
VIN becomes less than VLT, the output stays at this saturation level.
Once the input voltage crosses the lower threshold voltage level, the
output changes state to -VSAT.
The output remains at this state until the input rises beyond the upper
threshold voltage.
Following image shows the transfer characteristics of Non-Inverting
Schmitt Trigger circuit.
47. Applications
1. One important application of Schmitt
Trigger is to convert Sine waves into Square
waves.
2. They can be used to eliminate chatter in
Comparators (a phenomenon where
multiple output transitions are produced
due to swinging of input signal through the
threshold region).
3. They can also act as simple ON / OFF
Controllers (for example, temperature based
switches).
48. Hysteresis
When the input is below a different (lower) chosen
threshold the output is low, and when the input is
between the two levels the output retains its value.
This dual threshold action is called hysteresis
Effects of hystresis:
1. It improves noise immunity
2. It reduces the response time and the operation becomes
faster.
3. It reduces the possibility of triggering produced by noise.
51. Peak detector using OPAMP
Peak detector circuits are used to determine the peak
(maximum) value of an input signal. It stores the
peak value of input voltages for infinite time
duration until it comes to reset condition. Usually,
the peak of non-sinusoidal waveforms is measured
using a peak detector. As traditional ac voltmeter
cannot measure the peak of such signals.
52.
53. i) During the positive half cycle of Vin:
the o/p of the op-amp drives D1 on. (Forward biased)
Charging capacitor C to the positive peak value Vp of
the input volt Vin.
ii) During the negative half cycle of Vin:
D1 is reverse biased and voltage across C is retained.
The only discharge path for C is through RL since the
input bias IB is negligible.
54. Applications of Peak detector
It is used in the analysis of spectral and mass
spectrometer.
Peak detector finds its application in destructive
testing.
It is used for instrumentation measurement, mostly
in amplitude modulated wave communication.
It widely finds applications in sound measuring
instruments.