Linear integrated Circuits Premium Lecture Notes, Prepared by Lavanya. Specially for Electronics and Communication Engineering. Syllabus Covered based on Anna University B.E Electronics and Communication Engineering
CONTENT:
UNIT-1 (Pg.no 1-50)
BASICS OF OPERATIONAL AMPLIFIERS
UNIT-2 (Pg.no 51-110)
APPLICATION OF OPERATIONAL AMPLIFIER
Attachment: Click hereUNIT-1
BASICS OF OPERATIONAL AMPLIFIERS
Introduction
Block diagram of operational amplifier
Current sources
1. Ideal current sources
2. Basic current sources
Current mirror
Basic current sources circuit
Wilder current sources
Wilson current sources
Current sources as active load
Differential amplifier with active load
Limitation in IC fabrication
BJT differential amplifier using active loads
Voltage sources
Voltage references
Properties
Band gap voltage references
Important op-amp parameters
1. Power supply rejection ratio
2. Slew rate
Effects of slew rate
Slew rate equation
Methods of improving slew rate
Open loop configuration of op-amp
Closed loop configuration of op-amp
Advantages
IC741 Operational amplifier
Internal circuit diagram of IC741
Features of op-amp
Package of op-amp
Commercial op amp parameters
Characteristics of op amp
Advantages
Applications
Block diagram of op-amp
Ideal operational amplifier
Differential gain
Common mode gain
Common mode rejection ratio CMRR
Features of differential amplifier
Ideal op amp characteristics
Ideal voltage transfer curve
DC characteristics of op amp
1. Input bias current
2. Input offset current
3. Input offset voltage
4. Thermal drift
AC characteristics of op amp
1. Slew rate
2. Frequency response
Effect of slew rate
Slew rate equation
Frequency response of op-amp
Observation from frequency response of op amp
Voltage series feedback amplifier
Closed loop voltage gain
Input resistance with feed back
Output resistance with feedback
Total output offset voltage with feedback
Voltage shunt feedback amplifier
Closed loop voltage gain
Application of operational amplifier
1. Summer and subtractor
2. Differentiator
3. Integrator
Non-inverting summing amplifier
Subtractor or differential amplifier
Integrator
Active op amp integrator
Input and output waveform
Differentiator
UNIT-2
APPLICATION OF OPERATIONAL AMPLIFIER
Introduction
Zero input current
Assumption for analyze practical op-amp
Closed loop gain
Voltage follower
Summer or adder circuit
Inverting summer
Non-inverting summing amplifier
Average circuit
Subtractor or difference amplifier
Voltage to current converter
Voltage to current converter with grounded load
Application of V-I converters
Low voltage AC voltmeter
Diode tester and match filter
Zener diode tester
Current to voltage converter
Application of I/V converter
1. Photo diode detector
2. Photo FET detector
Instrumentation amplifier
Requirements of a good instrumentation amplifier
1. Finite ,accurate and stable gain
2. Easier gain adjustment
3. High input impedance
4. Low output impedance
5. High CMRR
6. Low power consumption
7. Low thermal and time drift
8. High slew rate
Difference amplifier using one op amp
Limitation
Modified difference amplifier
Instrumentation amplifier with two op-amp
Advantages
Three op-amp instrumentation amplifier
Application
Integrator
Frequency response of ideal amplifier
Limitation
Basic logarithmic amplifier
Temperature compensated log amplifier
Antilog amplifier
Compensators
Types
1. Non-inverting compensator
2. Inverting compensator
Basic non-inverting compensator
Schmitt trigger
Inverting Schmitt trigger
Precision rectifier
Precision half wave rectifier
1. positive HWR
2. Negative HWR
Active peak detector
Types
1. Voltage follower peak detector
2. Peak detector using integrator
Clippers
Types
1. Positive clipping circuit
2. Negative clipping circuit
Clampers
Types
1. Positive clamper circuits
2. Negative clamper circuits
Active filters
Types
1. Passive filters
2. Active filters
Advantages
Low pass butterworth filters
High pass butterworth filters
Band pass filters
Wide band pass filters
Narrow band pass filters
Band elimination filter
Types
1. Wide band reject filter
2. Narrow band reject filter
Attachment: Click here
