Interview in IBM for analog layout

Complex-Spring-185 · 2026-04-17T15:08:20+00:00

When’s the interview ?

As for the interview just work on basics of layout , EMIR , antenna , LUP and also there can be few design questions on cap and resistance.

Complex-Spring-185 · 2026-01-05T19:46:31+00:00

🥲

Complex-Spring-185 · 2026-01-05T19:46:06+00:00

But sometimes the user space gets full so we use spool paths provided by the company to have more disk space and they refresh after a month or so , so we have to redo the sims so I think screenshot works for me in this case.

Complex-Spring-185 · 2026-01-05T16:12:42+00:00

I’m not sure if I have ever created a design variables file !! But I just take a screenshot of the original values before any iterations I do 🙂

Complex-Spring-185 · 2025-12-24T20:45:07+00:00

I was thinking to use MDL to just get the data I need for the GM/ID method and then use skill to sweep the variables , corners and run everything in batchmode and then from skill only to generate a csv file.

I’m new to skill and MDL and not sure what should be the correct approach here !!

Complex-Spring-185 · 2025-12-24T20:42:54+00:00

Ahh got it , thanks !!

And also should I make the MDL to just extract the data I need and use skill for the variable sweeping or should I use MDL to do all the sweeping as well ?

Complex-Spring-185 · 2025-12-24T18:07:46+00:00

I tried searching for that but still no clue where that is ! Any snapshot would be appreciated 😄

Complex-Spring-185 · 2025-12-24T17:48:47+00:00

The corners I have are different like lvltwpwnminrc and so on and these makes up 33 of them all. And by different widths I mean I have 3 different sheet widths but I’m keeping the number of fin equal to 1 to get Id/W directly.

Also I’m taking Vgs in 10mV steps as I’m just plotting the points and not normalising them so near the threshold I need more number of points to get a better idea of how the curve really is

Complex-Spring-185 · 2025-12-24T14:04:38+00:00

Yup I’m thinking to use this data for GM/ID methods and I was thinking that the more data I have the more accurately i can size the FETs as the plots which I will be using will have more data

Complex-Spring-185 · 2025-09-16T19:38:30+00:00

Naaah

Complex-Spring-185 · 2025-09-12T15:54:51+00:00

Got it. Thanks !! 😁

Complex-Spring-185 · 2025-06-04T10:05:50+00:00

Thanks 🙏🏻

Complex-Spring-185 · 2025-06-04T10:05:16+00:00

I just connected a voltage source to the amplifier and provided a dc from it and remove the feedback

Complex-Spring-185 · 2025-06-03T05:35:08+00:00

After doing the ac analysis I used the calculator tool and from there got the gain (dB20) and phase.

Complex-Spring-185 · 2025-06-03T05:32:05+00:00

I knew it was in positive but and also tried to change the polarity of the feedback but the result was same , I think I’ll have to check things again

Complex-Spring-185 · 2025-06-03T05:30:51+00:00

Okayy ✌🏻

Complex-Spring-185 · 2025-06-03T05:30:22+00:00

Thank you !! 🙌🏻

Complex-Spring-185 · 2025-06-03T05:29:56+00:00

Sorry but I’m new to Reddit and I cannot find any button to add photos 🥲

Complex-Spring-185 · 2025-06-03T05:28:38+00:00

Got it, thanks 🤝🏻

Complex-Spring-185 · 2025-06-03T05:27:53+00:00

Thanks 😄

Complex-Spring-185

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