Video lectures from the iCS group @ IIT Madras

EC5135: Analog Electronic Circuits/EC3102 Analog Circuits(Aug.-Nov. 2011)

These lectures are available on the web for the benefit of students at IIT Madras and elsewhere. Copyrights to these rest solely with the instructor and IIT Madras. Copying them, publishing them, rehosting them on other servers, or using them for any sort of commercial gain is prohibited.

See this page for information on how to view these videos.

Instructor: Nagendra Krishnapura

This is an introductory course on Analog Circuits. Problem sets and other instructions can be found here. Familiarity with basic linear electrical networks is assumed. At IIT Madras, the prerequisite courses are Electrical and Magnetic Circuits and Networks and Systems.

The lectures are also available in iPod format(320×240 video, AAC audio). Click on the link marked iPod next to each lecture to download these.


  1. 2011-08-02: Introduction to the course
  2. 2011-08-03(iPod): Analysis of circuits with nonlinear elements
  3. 2011-08-04(iPod): Incremental analysis of a nonlinear circuit; Model of a diode
  4. 2011-08-05(iPod): Incremental analysis; One port and two port networks; Two port y-parameters
  5. 2011-08-06(iPod): Nonlinear two port networks; Incremental y parameters
  6. 2011-08-09(iPod): Incremental y parameters for obtaining high gain; Introduction to the MOS transistor
  7. 2011-08-10(iPod): MOS transistor model; Realizing an amplifier using a MOS transistor
  8. 2011-08-11(iPod): Common source amplifier; Biasing the transistor and adding the signal
  9. 2011-08-16(iPod): Adding a bias to a signal
  10. 2011-08-17(iPod): Common source amplifier; ac coupling at the input and the output
  11. 2011-08-18(iPod): Calculating ac coupling capacitors; swing limits
  12. 2011-08-19(iPod): Swing limits continued; transistor in the triode region.
  13. 2011-08-20(iPod): Gain sensitivity to biasing; Biasing a transistor at a constant drain current
  14. 2011-08-23(iPod): Current mirror biased common source amplifier
  15. 2011-08-26(iPod): Common source amplifier with drain feedback biasing; Biasing using a current source at the source
  16. 2011-08-27(iPod): Common source amplifier with a current source at the source terminal; Using a resistor instead of a current source; sensitivity
  17. 2011-08-30(iPod): Negative feedback amplifier
  18. 2011-09-08(iPod): CCVS using an opamp
  19. 2011-09-06: Identifying the signs of the opamp (no recording)
  20. 2011-09-09(iPod): VCVS using a transistor-common drain amplifier
  21. 2011-09-10(iPod): CCCS using a transistor-common gate amplifier
  22. 2011-09-13(iPod): CCVS using a transistor
  23. 2011-09-14(iPod): VCCS using a transistor
  24. 2011-09-20: pMOS-large signal and small signal models; converting nMOS circuits to pMOS last year's lecture(iPod)
  25. 2011-09-21: Biasing a pMOS transistor at a constant current; Controlled sources in pMOS
  26. 2011-09-22: Constraints to increasing the gain of a common source amplifier; Active load last year's lecture(iPod)
  27. 2011-09-23: Active load; large signal characteristics last year's lecture(iPod)
  28. 2011-09-27(iPod): CMOS inverter-characteristics, use as an amplifier
  29. 2011-09-28(iPod): Biasing a CMOS inverter in the high gain region
  30. 2011-10-04(iPod): Differential pair; advantages of differential circuits and signals
  31. 2011-10-05(iPod): Common mode and differential half circuits
  32. 2011-10-11(iPod): Differential pair with current mirror active load
    • For additional information on calculating the gain of a differential pair with a current mirror load, see this lecture
    • Problem 6 of this problem set deals with conditions under which the tail node voltage is zero in an asymmetrically loaded differential pair.
  33. 2011-10-12(iPod): Single stage opamp-swing limits; Adding a buffer; Adding a second stage
  34. 2011-10-14(iPod): Two stage opamp
  35. 2011-10-18(iPod): Two stage opamp cont'd; MOS transistor parasitics
  36. 2011-10-19(iPod): Common source amplifier frequency response
  37. 2011-10-20(iPod): Common source amplifier frequency response; Effect of Cgd; Miller effect; Pole splitting
  38. 2011-10-25(iPod): Common source, Common drain, Common gate amplifier frequency response
  39. 2011-10-27(iPod): Negative feedback amplifier with a single pole opamp; Significance of loop gain and unity loop gain frequency
  40. 2011-10-28(iPod): Non-inverting and Inverting amplifiers using an opamp; Negative feedback amplifier with a two pole opamp
  41. 2011-11-01(iPod): Multiple poles in negative feedback; Criteria for well behaved amplifiers
  42. 2011-11-04(iPod): Phase margin criterion for well behaved amplifiers with multiple poles in the loop
  43. 2011-11-08(iPod): Frequency compensation of a two stage opamp with two poles
  44. 2011-11-09(iPod): Dominant pole compensation by capacitively loading a node and by pole splitting
  45. 2011-11-11(iPod): Pole splitting compensation; examples
  46. 2011-11-16(iPod): Right half plane zero cancellation; Introduction to the bipolar transistor
  47. 2011-11-18(iPod): Small signal model of the bipolar transistor; Key differences between BJT and MOS circuits

Problem sets

  1. 2011-08-12: Problem set 1
  2. 2011-08-24: Problem set 2
  3. 2011-09-15: Problem set 3
  4. 2011-10-07: Problem set 4
  5. 2011-11-02: Problem set 5
  6. 2011-11-15: Problem set 6
  7. 2011-11-18: Problem set 7


  1. 2011-08-25: Quiz I
  2. 2011-09-16: Quiz II
  3. 2011-10-13: Quiz III
  4. 2011-11-03: Quiz IV