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22-Elec-B5 Advanced Electronics: May 2013

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

  1. Question 1 PNP common-emitter amplifier — gain and bandwidth
  2. Question 2 Feedback amplifier — input and output resistance
  3. Question 3 Cascode differential pair — gain, input range and CMRR
  4. Question 4 Eight-bit analog-to-digital conversion — resolution and quantisation error
  5. Question 5 Tuned amplifier with a series-resonant trap
  6. Question 6 Class-AB output stage inside error amplifiers

Start with Question 1 →

Paper format. National Exams, May 2013 — 07-Elec-B5 Advanced Electronics. Three hours, closed book; one approved Casio or Sharp calculator is permitted. Six questions are printed and five (5) constitute a complete paper — the first five appearing in the answer book are marked — and every question is worth 20 marks. In schematics ground and chassis may be assumed common; op-amps are ideal with ±15 V rails unless stated otherwise. All six questions are solved here, because this set is a study resource rather than a timed sitting.

Reference texts. A. S. Sedra, K. C. Smith, T. C. Carusone and V. Gaudet, Microelectronic Circuits, 8th ed. — the recommended reference for this exam code: Ch. 7 (transistor amplifiers and small-signal models), Ch. 8 (differential and multistage amplifiers), Ch. 10 (frequency response and the Miller effect), Ch. 11 (feedback topologies and their resistance transformations), Ch. 12 (class-AB output stages) and Ch. 13 (data converters). Supplementary: B. Razavi, Design of Analog CMOS Integrated Circuits, 2nd ed. (cascodes, CMRR, tuned stages) and P. R. Gray, P. J. Hurst, S. H. Lewis and R. G. Meyer, Analysis and Design of Analog Integrated Circuits, 5th ed.

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