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analog circuits

Semester : IV

Course Code : 18EC42

CIE Marks : 40                       SEE Marks : 60

 Module – 1

Handwritten Notes

 Module – 2

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 Module – 3

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 Module – 4

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 Module – 5

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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 input 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 modelling: The DC bias point, signal current in the 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) ] 


MOSFET Amplifier configuration:
Basic configurations, characterizing amplifiers, CS amplifier with and without source resistance RS, Source follower. MOSFET internal capacitances and High-frequency model: The gate capacitive effect, Junction capacitances, High-frequency model.Frequency response of the CS amplifier: The three frequency bands, high-frequency response, Low-frequency response
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] 


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 output 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)] 


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] 


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)]