IC Layout Interview Questions Samples

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IC LAYOUT INTERVIEW QUESTIONS Draw the symbol of NMOS & PMOS Transistor? Explain each terminal and where its connecting?
What is mean by Latch-up? What are the solution to solve latch-up issues? How you will take care while doing layout?
What is mean by Guard ring? What are types of Guard rings? How it will help to reduce latch-up? What is Deep N-well guarding?
what is meant by antenna? what is the solution to reduce antenna effect in the layout? From where accumulated charges are coming? Where is the discharge path? How do jumper and diode will help? No place to add diode and jumper what you will do?
Explain about shielding? Types of shielding? What are the signals you will do shielding and why? Where you will connect shielded lines and why? Without shielding what will happen?
What is mean by cross-talk?
Describe Electromigration effect? & ways to reduce Electromigration during layouts?
What is ESD? how you will fix ESD problems in the layout?
What is WPE, LOD & STI? Explain with diagram.
What is matching? Types of matching and explain one by one? What will happen not doing matching?
Describe DFM?
What is STD cells? How you will decide the height of STD cells? What is mean by Track? What is mean by a pitch?
Draw the diagram of INV, NAND and OR gates.
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