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  • 12:32 PM, Sunday, 24 Oct 2021

Course Postgraduate
Semester Electives
Subject Code AVP864
Subject Title Interface Electronics



Role of Interface Electronics, Example: Linear Position Sensing, Signal conditioners + ADC, Contactless potentiometer (resistance-capacitance scheme) –Methodology, Interface Circuits, Need of Current/Pneumatic Transmission, Analog Electronic Blocks, OPAMP –internal structure, Open-loop gain, Input R, Output R, DC noise sources and their drifts, CMRR, PSRR, Bandwidth and stability, Slew rate, Noise –general introduction and noise in opamps and their analysis, Noise-equivalent Bandwidth, Output voltage swing, Compensation Techniques.


OPAMP Circuits and Analysis-Difference and Instrumentation Amplifiers (3-opamp and 2-opamp), Effect of cable capacitance and wire-resistance on CMRR, IA with guards, Biomedical application, Current-mode IA (Howland), Current-input IA, filters, Filters with underdamped response, state-variable filters, All-pass filters, Current Sources (floating and grounded loads), PGA, V-to-f converters, Negative Resistance Generator, Gyrator, GIC andapplications, Quadrature oscillator, Introduction to switched capacitor circuits and applications, OTA and applications.


Magnetic Sensors-HallEffect Sensors, Magnetoresistance Sensors, GMR Sensors, Linearization Electronics for Sinusoidal Encoders, Wiegand Effect, Special Topics: Interface Electronics for Remote-connected sensor elements, Front-end Electronics for Reluctance-Hall Effect Angle Transducer (Brake Wear Monitoring), Oscilloscope Probes.


Frequency and Time Measurement, Sample Hold Circuits, ADCs and their properties, Different ADC Architectures –Single Slope, Dual Slope (with emphasis on DMM), SAR, Flash, Sigma-Delta. Voltage references and regulators, Phase-locked loops,


EMI and EMC-Techniques


Text Books

1.Ramón Pallás-Areny, John G. Webster, Sensors and Signal Conditioning, 2nd Edition, Wiley, 2003.

2.Sergio Franco, Design with Operational Amplifiers and Analog Integrated Circuits, 3rd Edition, McGraw hill, 2002.

3.Ramón Pallás-Areny, John G. Webster, Analog Signal Processing, 1st Edition, Wiley, 2011.

4.George Clayton, Steve Winder, “Operational Amplifiers”, 5th Edition, Elsevier Newnes, 2003.

5.Ramakant A. Gayakwad, “Opamps and Linear Integrated Circuits,” PHI India, 4th Edition.

6.L. K. Baxter, Capacitive Sensors Design and Applications, IEEE Press Series on Electronic Technology, NJ (1997).

7.John P. Bentley, Principle of Measurement Systems, Pearson Education; 3rd Edition, 2006