ANALOG CIRCUIT
Subject Code:18EC42
CIE Marks:40
SEE Marks:60
Number of Lecture Hours/Week:3+2 (Tutorial)
Exam Hours:03
CREDITS – 0
Course Learning Objectives: This course will enable students to
Explain various BJT parameters, connections and configurationsDesign and demonstrate the diode circuits and transistor amplifiers
Explain various types of FET biasing, and demonstrate the use of FET amplifiers.
Construct frequency response of FET amplfiers at various frequencies.
Analyze Power amplifier circuits in different modes of operation.
Construct Feedback and Oscillator circuits using FET.
Scroll down to get model question papers and module wise notes
Module -1
BJT Biasing: Biasing in BJT amplifier circuits:
The Classical Discrete circuit bias (Voltage-divider ias), Biasing using a collector to base feedback resistor.Small signal operation and Models: Collector current and transconductance, Base current and inpt resistance, Emitter current and input resistance, voltage gain, Separating the signal and the DC quantities, The hybrid ? model.
MOSFETs: Biasing in MOS amplifier circuits:
Fixing VGS, Fixing VG, Drain to Gate feedback resistor
Small signal operation and modeling: The DC bias point, signal current in drain, voltage gain, small signal equivalent circuit models, transconductance.[Text 1: 3.5(3.5.1, 3.5.3), 3.6(3.6.1 to 3.6.6), 4.5(4.5.1, 4.5.2, 4.5.3), 4.6(4.6.1 to 4.6.6) ]
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Module -2
MOSFET Amplifier configuration:Basic configurations, characterizing amplifiers, CS amplifier with and without sourc resistance RS, Source follower. MOSFET internal capacitances and High frequency model: The gate capacitive effect, Junction capacitances, High freqency model.Frequency response of the CS amplifier:
The three frequency bands, high frequency response, Low frequency response
Oscillators:
FET based Phase shift oscillator, LC and Crystal Oscillators (no derivation)
[Text 1: 4.7(4.7.1 to 4.7.4, 4.7.6) 4.8(4.8.1, 4.8.2, 4.8.3), 4.9, 12.2.2, 12.3.1, 12,3,2]
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Module -3
Feedback Amplifier:General feedback structure, Properties of negative feedback, The Four Basic Feedback Topoloies, The series-shunt, series-series, shunt-shunt and shunt-series amplifiers (Qualitative Analysis).
Output Stages and Power Amplifiers:
Introduction, Classification of output stages,, Class A output stage, Class B ouput stage: Transfer Characteristics, Power Dissipation, Power Conversion efficiency, Class AB output stage, Class C tuned Amplifier.
[Text 1: 7.1, 7.2, 7.3, 7.4.1, 7.5.1, 7.6 (7.6.1 to 7.6.3), 13.1, 13.2, 13.3(13.3.1, 13.3.2, 13.3.3, 13.4, 13.7)]
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Module -4
Op-Amp with Negative Feedback and general applicationsInverting and Non inverting Amplifiers – Closed Loop voltage gain, Input impedance, Output impedance, Bandwidth with feedback. DC and AC Amplifiers, Summing, Scaling and Averaging Amplifiers, Instrumentation amplifier, Comparators, Zero Crossing Detector, Schmitt trigger.[Text 2: 3.3(3.3.1 to 3.3.6), 3.4(3.4.1 to 3.4.5) 6.2, 6.5, 6.6 (6.6.1), 8.2, 8.3, 8.4]
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Module -5
Op-Amp Circuits:DAC - Weighted resistor and R-2R ladder, ADC- Succssive approximation type, Small Signal half wave rectifier, Active Filters, First and second order low-pass and high-pass Butterworth filters, Band-pass filters, Band reject filters.
555 Timer and its applications: Monostable and a stable Multivibrators.
[Text 2: 8.11(8.11.1a, 8.11.1b), 8.11.2a, 8.12.2, 7.2, 7.3, 7.4, 7.5, 7.6, 7.8, 7.9, 9.4.1, 9.4.1(a), 9.4.3, 9.4.3(a)]
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Important Link:
Course Outcomes:
At he end of this course students will demonstrate the ability to• Understand the characteristics of BJTs and FETs.
• Design andanalyze BJT and FET amplifier circuits.
• Design sinusoidal and non-sinusoidal oscillators.
• Understand he functioning of linear ICs.
• Design of Linear IC based circuits.
Question paper pattern
• Examination will be conducted for 100 marks with questin paper containing 10 full questions, each of 20 marks.• Each full question can have a maximum of 4 sub questions
• There will be 2 full questions from each module covering all the topics of the module
• Students will have to answer 5 full questions, selecting one full question from each module.
• The total marks will be proportionally reduced to 60 marks as SEE marks is 60.
Text Books
1. Microelectonic Circuits, Theory and Applications, Adel S Sedra, Kenneth C Smith, 6th Edition, Oxford,2015.ISBN:97-0-19-808913-1
2. Op-Amps an Linear Integrated Circuits, Ramakant A Gayakwad, 4th Edition. Pearson Education, 2000. ISBN: 8120320581
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