# What is Ic design: Definition and 71 Discussions

Integrated circuit design, or IC design, is a subset of electronics engineering, encompassing the particular logic and circuit design techniques required to design integrated circuits, or ICs. ICs consist of miniaturized electronic components built into an electrical network on a monolithic semiconductor substrate by photolithography.
IC design can be divided into the broad categories of digital and analog IC design. Digital IC design is to produce components such as microprocessors, FPGAs, memories (RAM, ROM, and flash) and digital ASICs. Digital design focuses on logical correctness, maximizing circuit density, and placing circuits so that clock and timing signals are routed efficiently. Analog IC design also has specializations in power IC design and RF IC design. Analog IC design is used in the design of op-amps, linear regulators, phase locked loops, oscillators and active filters. Analog design is more concerned with the physics of the semiconductor devices such as gain, matching, power dissipation, and resistance. Fidelity of analog signal amplification and filtering is usually critical and as a result, analog ICs use larger area active devices than digital designs and are usually less dense in circuitry.
Modern ICs are enormously complicated. An average desktop computer chip, as of 2015, has over 1 billion transistors. The rules for what can and cannot be manufactured are also extremely complex. Common IC processes of 2015 have more than 500 rules. Furthermore, since the manufacturing process itself is not completely predictable, designers must account for its statistical nature. The complexity of modern IC design, as well as market pressure to produce designs rapidly, has led to the extensive use of automated design tools in the IC design process. In short, the design of an IC using EDA software is the design, test, and verification of the instructions that the IC is to carry out.

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1. ### Time domain equation for RC circuit with AC input

TL;DR Summary: How to find Time domain equation for RC circuit with AC input from inverse laplace transform For a simple RC circuit with AC input such as this: https://www.electronics-tutorials.ws/wp-content/uploads/2013/08/rc12.gif?fit=310%2C151?fit=310,226. If the AC input is just a simple...
2. ### Voltage gain of a bipolar transistor circuit

For a simple bipolar transistor above, base-to-collector voltage gain ≈ -gm*Rc/(1+gm*Re) < 0, base-to-emitter voltage gain ≈ 1 > 0, should emitter-to-collector voltage gain ≈ -gm*Rc/(1+gm*Re) * 1 < 0. How come it is equal to gm*Rc > 0?
3. ### Physics Physics Degrees and Semiconductor Industry (IC Design?)

Hello there, im a physics student from Germany and currently in my second semester of a Bachelor of science. Lately i have become increasingly interested in woking in the Semiconductor Industry and I am currently reading the book "But how do it Know" by J. Clark Scott and i think it is really...
4. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Course introduction; Negative feedback control

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
5. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Negative feedback amplifier

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
6. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Step response, sinusoidal steady state response

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7. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Loop gain and unity loop gain frequency; Opamp

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8. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Opamp realization using controlled sources; Delay in the loop

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9. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Negative feedback amplifier with ideal delay-small delays

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
10. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Negative feedback amplifier with ideal delay-large delays

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
11. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Negative feedback amplifier with parasitic poles and zeros

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
12. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Negative feedback amplifier with parasitic poles and zeros; Nyquist criterion

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
13. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Nyquist criterion; Phase margin

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14. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Phase margin

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
15. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Single stage opamp realization

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
16. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Two stage miller compensated opamp - 1

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
17. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Two stage miller compensated opamp - 2

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
18. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Two and three stage miller compensated opamps; Feedforward compensated opamp - 1

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
19. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Feedforward compensated opamp - 2

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
20. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Feedforward compensated opamp - 3

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
21. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Feedforward compensated opamp - 4; typical opamp data sheet

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22. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Opamp offset and CMRR; Transimpedance amplifier using an opamp

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
23. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Components available in a CMOS process

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
24. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- MOS transistors-basics

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
25. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- MOS transistors-parasitics, mismatch

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
26. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- MOS transistors-mismatch, speed

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
27. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Noise in resistors

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
28. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Noise in MOS transistors; Input and output referred noise

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
29. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Noise scaling; Basic amplifier stages-Common source, common gate

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
30. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Basic amplifier stages-Common drain; Frequency response of amplifiers

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
31. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Common source amplifier frequency response; Differential amplifier

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
32. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Differential and common mode half circuits; Differential pair with active load

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
33. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Differential pair with current mirror load

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
34. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Single stage opamp characteristics

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
35. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Opamp with single and dual supplies; Single stage opamp tradeoffs

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
36. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Telescopic cascode opamp

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
37. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):-Telescopic cascode opamp; Folded cascode opamp

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
38. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Folded cascode opamp

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
39. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Two stage opamp

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
40. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Two stage opamp; Three stage and triple cascode opamps

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
41. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Common mode rejection ratio; Example

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
42. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Fully differential circuits

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
43. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Fully differential single stage opamp

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
44. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Common mode feedback

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
45. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Fully differential single stage opamp

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
46. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Fully differential two stage opamp; Fully differential versus pseudo-differential

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
47. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Circuit simulators and analyses

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
48. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Phase locked loop as frequency multiplier

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
49. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Phase domain model

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030
50. ### Analog IC Design by Dr. Nagendra Krishnapura (NPTEL):- Type I PLL transfer function and reference feedthrough

COPYRIGHT strictly reserved to Prof. Dr. Nagendra Krishnapura and NPTEL, Govt. of India. Duplication Prohibited. Lectures: http://www.nptel.ac.in/courses/117106030/ Syllabus: http://www.nptel.ac.in/syllabus/syllabus.php?subjectId=117106030