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22-Elec-B5 Advanced Electronics: May 2017

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Single-Stage CMOS Differential Amplifier — Device Sizing and Differential Gain
  2. Question 2 Series–Shunt Feedback Amplifier — Feedback Factor, Loop Gain and Closed-Loop Gain
  3. Question 3 Lower Cutoff Frequency of a Common-Emitter Amplifier — Coupling and Bypass Capacitor Design
  4. Question 4 RC Oscillator — Frequency of Oscillation, Start-Up Condition and Amplitude Stabilisation
  5. Question 5 Bipolar Cascode — Voltage Gain

Start with Question 1 →

Paper format. National Exams May 2017, 16-Elec-B5 Advanced Electronics — 3 hours, CLOSED BOOK, one approved Casio or Sharp calculator. Five questions, all to be answered, 20 marks each (100 marks total). In schematics ground and chassis are common; op-amps are ideal and supply rails are ±15 V unless stated otherwise. Candidates are instructed to state any interpretive assumptions inside the answer.

Reference texts. A. S. Sedra and K. C. Smith, Microelectronic Circuits, 8th ed. (differential and multistage amplifiers, Ch. 9; frequency response, Ch. 10; feedback, Ch. 11; oscillators, Ch. 18); B. Razavi, Design of Analog CMOS Integrated Circuits, 2nd ed. (Ch. 4 differential amplifiers, Ch. 9 cascodes) and Fundamentals of Microelectronics, 2nd ed. (Example 9.9, the bipolar cascode); P. R. Gray, P. J. Hurst, S. H. Lewis and R. G. Meyer, Analysis and Design of Analog Integrated Circuits, 5th ed. (Ch. 8 feedback).