GATE EE 2027 · SUBJECT 09 / 10

Analog & Digital Electronics: Syllabus, Topics & Reference Books

Diodes, amplifiers, op-amps, filters, logic circuits, ADC/DAC and waveform circuits.

Analog & Digital Electronics syllabus topics

The following topic groups come from the syllabus content included in this study hub. Consult the official GATE 2027 website for examination updates.

  1. Simple diode circuits: clipping, clamping, rectifiers;
  2. Amplifiers: biasing, equivalent circuit and frequency response;
  3. oscillators and feedback amplifiers;
  4. operational amplifiers: characteristics and applications;
  5. single stage active filters,
  6. Active Filters: Sallen Key, Butterworth,
  7. VCOs and timers,
  8. combinatorial and sequential logic circuits,
  9. multiplexers, demultiplexers,
  10. Schmitt triggers,
  11. sample and hold circuits,
  12. A/D and D/A converters.

How to prepare this subject

  1. Check topic coverage. Work through the groups above and mark unfamiliar concepts.
  2. Learn and practise. Study one relevant reference book, then solve worked examples without looking at the solutions.
  3. Apply concepts. Use GATE EE previous-year questions to assess where you need additional practice.
  4. Revise and test. Create a short formula or concept sheet and reattempt questions you initially missed.

Recommended reference books

These are textbook suggestions for studying this subject, not a mandatory purchase list.

  • Electronic Devices and Circuit Theory — R. L. Boylestad & L. Nashelsky
  • Microelectronic Circuits — A. S. Sedra & K. C. Smith
  • Digital Design — M. Morris Mano & Michael D. Ciletti

Free resources for practice

Use the downloadable question-paper collection and year-wise weightage report as supporting study materials.

GATE EE Study Hub is an independent educational initiative by Manoranjan Kumar. It is not affiliated with or endorsed by the GATE organizers.

STEP-BY-STEP LEARNING

Non-inverting op-amp gain and bandwidth

Connect resistor feedback to amplifier gain, estimate bandwidth, and test the limits of an ideal model.

Key learning goal: Compute a non-inverting amplifier gain and approximate its small-signal bandwidth using the op-amp gain-bandwidth product.

Read the detailed worked example and self-check question →

Quick concept check: Keeping Rg = 10 kΩ, choose Rf for a non-inverting gain of 5 and estimate bandwidth for a 1 MHz GBW.

Check the answer

Rf = (5 − 1) × 10 kΩ = 40 kΩ. Approximate bandwidth = 1 MHz/5 = 200 kHz under the same single-pole assumption.

Common pitfalls: Omitting the “1 +” in non-inverting gain. Using the ideal gain when the predicted output exceeds the supply limits.