PNR flow, Sta, OCV, AOCV Internship experience based questions Physical verification and Routing
Physical Design Engineer Interview Questions
711 physical design engineer interview questions shared by candidates
was asked why 2 inverters are better that 1 buffer for fixing quality. and what the advantage of using 1 buffer that 2 inverters.
explain the types of files that are fed as input to floorplan step
Layout of an inverter, Verilog coding for a state machine, physical design flow
What are the differences between buffers and inverters? A ~30 minute discussion on this question followed.
How is uncertainty determined.
STA, PNR, and the Antenna effect. Basic logical gate circuit.
Flow of current in a layout ( given randomly by the interviewer)
Phone screening 1. Questions about previous work experiences, digital circuit/layout design. 1:1 Technical interviews 1. RC circuits. Response to step input signal. 2. Transistor sizing for better setup/hold times. 3. Layout design of NAND3/NOR3 gates in different styles 4. Elmore delay of complex gates. 5. Standard cell library architecture choices and tradeoffs 6. Physical verification of standard cell libraries 7. DFM/DFD questions 8. Perl/Tcl and EDA tool related questions
they ask the inputs into the tools for different steps of physical design.
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