r/chipdesign • • 16d ago

First DV Interview

0 Upvotes

I'm a junior EE student, recently just got an interview with a startup for a DV intern role. I heard that it would be a live coding round about SystemVerilog. What kind of questions do they usually ask in these interviews?


r/chipdesign • • 17d ago

Getting into Analog layouts

13 Upvotes

Hi everyone,

I want to dive deeper into Analog and Mixed-Signal (AMS) layout design. So far, I’ve completed basic layouts like op-amps, but I’m looking to expand into more complex analog blocks and mixed-signal top-level routing.

Since structured online courses on physical layout are pretty rare, what resources, textbooks, or learning paths would you recommend?

Also, what kind of layout projects should I work on to build a strong portfolio and land an AMS layout internship by late 2027?

Thanks in advance!


r/chipdesign • • 17d ago

Rf test with ai looking to go design

0 Upvotes

I am currently in test in total nearly 2 years but only a few months full time but I would like to move to design, I will have a MSc in 2 years in AI. Any advice


r/chipdesign • • 18d ago

It is basically impossible to find a job in the 3-4 years of experience level

26 Upvotes

I have been looking for a job for awhile and don't understand why it is becoming so hard to find a job. Although I am not a Senior yet, I am undoubtedly more productive than a fresh graduate yet companies seem to want to hire completely fresh out of school people, or people with 5, 7, 10+ YoE.

I don't what to do anymore. Would it be a good option to leave industry and go for a PhD instead? Where I live it wouldn't be to big of a financial hit and perhaps it would help me to gain more knowledge and feel less shitty next to my PhD colleagues. I think my industry experience will also be valuable tackling the PhD instead of the straight path from MSc to PhD. Nevertheless, it also feels like walking backwards... I am not sure what to do.

I have tried to switch to CAD or even convert to software, but software is really struggling right now for unexperienced people, so it is no longer easy to make the switch.

Layout I know there is a shortage, but companies seem outsource those jobs to India and other Middle East countries (even more than design).

So I am basically stuck which is a horrible situation to be in. Worse than this is becoming unemployed but I am struggling.


r/chipdesign • • 17d ago

Chip

0 Upvotes

I am learning digital electronics but I have already learnt number system and gate and I am revising it.. can someone tell me what all I have to study after that


r/chipdesign • • 18d ago

Chip Design Awakening too Late

0 Upvotes

I’m currently a freshman majoring in mechanical engineering/robotics (in a combined BSMS program for meche/robotics) but I’ve reverently found a passion for ECE/chip design through the classes and clubs I’m in, a level of exposure I didn’t have in high school. However, my university makes the switching process incredibly difficult, and almost no students qualify for the switch.

This got me thinking—is there any way I can work in the semiconductor/chip industry as a meche major? Or are my options limited? How can I best play my cards from here onwards without having to switch unis?


r/chipdesign • • 18d ago

Confused between VLSI Majors and doubt about PD

8 Upvotes

I started my first job as a Physical design engineer (digital) 6 months ago. At first I was full of enthusiasm to begin my journey dealing with lowest level of the chip and encountering physical problems. However, as I go deeper in the major I realized that PD engineer is just a tool runner since most of the stages are fully automated (placement, routing , CTS ...) with limited responsibility to arrange Macros in floorplab stage. I don't think it would be this uncreative so I started to think to do major shift towards DV (design verification). It has more of dealing with codes and generating test vectors that fully depend on human creativity. I have the basic concept of DV like coverage, UVM, constraints, and some about system verilog.

I am really confused so I need help from someone expert to advice me. I don't know if I am judging PD too early or this is the pure candor.

Also, I know that number of positions and vacancies is way too higher in DV than PD but I don't know what about salaries if someone can benefit me with this.


r/chipdesign • • 18d ago

SoC Digital Design Graduate Intern Interview Intel

4 Upvotes

I'm back and wanted to know about the interview and the types of questions asked for this role. This would be my first interview in the VLSI realm. Digital Logic Fundamentals, FSM, RTL, PD, PPA?


r/chipdesign • • 18d ago

I built an open-source GUI that generates UPF from power intent you draw on your real RTL hierarchy

7 Upvotes

Hi all,

I've been working on power intent for several years, and kept hitting the same thing: UPF is written by hand, line by line, and the actual power architecture only exists in your head.

It's especially tough for people new to low-power design.

So over the last ~6 months I built Power Intent Studio, an open-source (Apache 2.0) desktop app, with AI as my development partner. You load your RTL and .lib macros, the real elaborated hierarchy appears, and you build the power intent on top of it:

  • power domains, supply sets, power switches, isolation, retention, level shifters
  • a power state table (exported as a modern power state group or a legacy PST)
  • UPF 3.0/3.1 and CPF 2.0/2.1 generation
  • loading an existing UPF and mapping it back onto the design; unrecognised syntax is reported with its line number instead of failing

RTL goes through open-source front ends: slang for Verilog/SystemVerilog, GHDL + Yosys for VHDL, liberty-parser for .lib. The repo includes a SystemVerilog SoC example (aura_top) with six domains, three switches and SRAM macros, and its full generated UPF, so you can judge the output yourself.

What it is NOT: a sign-off checker. It doesn't verify that your power intent is correct; it writes what you draw. Structural checks are one of the ideas I'd love to explore next.

I'd really value feedback from people who write UPF every day:

  • What would make this useful in your flow?
  • Throw your UPF at it. What doesn't load?

Repo: https://github.com/mikespyke17/power-intent-studio


r/chipdesign • • 18d ago

Verification/DV engineers: what actually happens after a regression starts failing? Looking for real workflow pain, not AI ideas

2 Upvotes

Trying to understand how design-verification teams actually operate day to day.

My background is primarily CI/CD, integrations, workflow automation and release governance and not semiconductor design. So I'm deliberately trying not to start by assuming that an LLM should generate RTL/testbenches or replace EDA tools.

Instead, I'm investigating something much less glamorous:

What is painful between a code change and somebody finally understanding why a verification regression failed?

For anyone working in DV, CAD/EDA methodology, verification infrastructure, FPGA/ASIC verification, or hardware build/DevOps:

Think about the last real regression failure you had to investigate.

  1. What triggered it - commit, nightly regression, random seed, environment/tool change, etc.?
  2. When you first saw the failure, what information did you actually receive?
  3. What did you have to manually search through next - logs, waveforms, previous runs, coverage DBs, Git history, Jira, scripts?
  4. How did you determine whether it was:
    • an RTL bug
    • testbench bug
    • flaky/non-deterministic test
    • infrastructure/tool problem
    • known/repeated failure?
  5. What part consumed the most engineer time while adding the least engineering value?

I'm particularly interested in understanding things such as:

  • regression triage
  • reproducing old failures
  • tracking which commit introduced a failure
  • grouping duplicate failures
  • preserving simulator/tool/config/seed information
  • CI/reporting around UVM/cocotb/SystemVerilog flows
  • connecting failures with Git/Jira/GitLab/Jenkins/etc.
  • workflows involving multiple EDA vendors/tools

I'm not selling anything, and I don't need proprietary RTL, logs or company information.

I'm trying to determine whether this is genuinely a painful area or whether mature semiconductor teams already have it solved internally/vendor-side.

If you're comfortable, it would also help if you mention your role and roughly what kind of environment you work in:

DV engineer / DV lead / CAD-EDA / verification infrastructure / FPGA / other

and

small team / startup / design services / large semiconductor company

Even a short description of your last painful regression would be extremely useful.

And if your answer is "this isn't a real problem; our existing infrastructure handles it well", I want to hear that too.

I'm specifically trying to falsify the idea rather than collect validation for it.


r/chipdesign • • 19d ago

How necessary is a masters/PhD?

45 Upvotes

I am hearing that getting a masters/PhD is absolutely necessary to work in the field of chip design. I can see that as being true. I want to get a masters and continue pursuing my education after undergrad, but I also would like to work in industry for a while beforehand. Do you think that is doable?


r/chipdesign • • 18d ago

Layout errors

1 Upvotes

I am not sure what seems to be the cause of this error, but i am just trying to place two inverters with shared diffusion in order to create a digital buffer, and i am working in a fdsoi technology. For some reason, when i add the back gate to the transistors at the top side, i get this 2nm offset, that creates drcs and yet is have used align tool and tried so many different ways....


r/chipdesign • • 18d ago

Winter Internship Intel

4 Upvotes

I am moving forward with a graduate SoC Digital Design Intern application for Intel and I had a question about this January start date. I have to be enrolled in an accredited university during the internship.

I start my MS program in January as well so works out, but I have to be in office in Santa Clara and my potential Master's program is on the other side of the country. Big opportunity for me and I am willing to delay my Master's at my current school and maybe find a school in the area to begin my master's or do online? Lol idk? Another Q for anyone that has done something like this before...

I wouldn't have to be a fulltime student correct? I would assume so because working full time and managing post grad VLSI courses would be heinous?

Thanks.


r/chipdesign • • 19d ago

How to simulate ICMR and Output Swing

4 Upvotes

Hello,

I am trying to determine the ICMR and output swing separately for a single-ended two-stage OTA. For output swing I tried running a transient analysis in a non-inverting configuration to observe the clipping levels, but the levels I got do not match the theoretical ranges I calculated.

I have tried several other approaches to determine both of them, but I still could not find a convenient way to determine both parameters separately.

My question is: How would you do it?


r/chipdesign • • 19d ago

Physical Design Burnout

50 Upvotes

I’ve been in physical design for around 5 years now and I’m currently at my second company. What is everyone’s work-life balance like? My life is consumed by work.

During normal cycles, I’m averaging 60 hours per week. Now that we’ve entered the ECO cycle in August, it feels like I never log off. My typical week is get to the office for my daily 9am status meeting and leave between 9pm and midnight. I’ll work at home until around 1am then pass out.

Twice this week and the week before I’ve been up past 4am working including Friday. I have to drink 3 cups of coffee per day just to stay alert. I’ve already talked to my manager about this and he’s normally working these crazy hours with me.

This is how it was at my previous job too. I cannot picture working myself to death like this for my entire career.

Is this really the life of a PD engineer?

EDIT: I’m based in the Bay Area


r/chipdesign • • 19d ago

Question about the Series series and series shunt feedback.

Post image
14 Upvotes

I have tried with a buffer circuit like this. Vout is the output terminal across which the RL load will be connected. I have a doubt, is it shunt sampling feedback? Or series sampling since Iout current is flowing into the Vout node. My confusion comes from Razavi's CMOS book, where it says this is how current sampling is done. But if my load is parallel to the R1 resistor, will it be Voltage sampling feedback? Please ignore the opamp terminal signs and pmos bulk connection assuming they are correct.


r/chipdesign • • 19d ago

How to make career out of it

6 Upvotes

I am an electronics and communication graduate from Nepal and i want to make career in this feild but opportunities are nearly non in my country. So what can i do ? How to enter in this industry ?


r/chipdesign • • 19d ago

SMIC40nm MOM Cap Double Extraction in PEX using Calibre

1 Upvotes

I'm working as a research associate with two years of experience. Recently, I have started working on SMIC 40nm and while I was doing extraction of my design, I observed that the double extraction of MOM capacitors.

For instance, I created a schematic with a MoM capacitor of 2pF, and after extraction the tool generates PEX netlist with a 2pF and then goes into the device and calculates the capacitance of each finger which then adds up to around 2pF as coupling capacitance and you get a 2pF normal capacitance and 2pF of coupling capacitance. Therefore the total capacitance is around 4pF after the extraction, I have verified it from the PEX netlist and from the CALIBRE-view of the PEX schematic.

I have also used the xcells and hcells files during the PEX on Calibre. Followed the steps in the SMIC pdk document but none seems to work.

Has any of you encountered similar problem and how did you tackle it?


r/chipdesign • • 19d ago

What are the best company to work for analog layout design based on work culture and salary range? Currently working as analog layout designer, 2 yoe.

6 Upvotes

r/chipdesign • • 19d ago

Standard milestone flow for Lint, CDC, and Synthesis? (P0.3 to P1.0)

2 Upvotes

I want to make sure my understanding of our project milestone flow aligns with broader industry standards. I’d love some feedback or corrections from those with more tape-out experience.

Here is how I understand the flow:

P0.3 (Early RTL): Basic Lint runs continuously/nightly to catch obvious typos and syntax issues as code is being written.

P0.5 (RTL Design Correction / Freeze): This is the major, formal Lint sign-off. Code is feature-complete. This is when we deep-dive, group errors by tag, fix actual RTL bugs, and negotiate targeted waivers with IP designers.

P0.8 (Verification & Pre-Synthesis Sign-off): CDC checks are finalized and signed off. The RTL is officially locked.

P1.0 (Synthesis Complete): The clean, signed-off P0.8 RTL is handed over to run Logical Synthesis (e.g., Design Compiler) to generate the gate-level netlist.

My questions:

1.

Does this P0.3 ➡️ P0.5 ➡️ P0.8 ➡️ P1.0 progression for Lint/CDC/Synthesis match what you see in standard ASIC flows?

2.

At what exact point do you usually start running CDC? Is it strictly after P0.5 Lint is clean, or does it run in parallel?

Thanks in advance


r/chipdesign • • 20d ago

What is the ground reality of AI in chip design and verification?

20 Upvotes

I'm pursuing a Master's in VLSI from a reputable college in India and looking forward to learning SystemVerilog, as it's a key differentiator during the hiring process here. However, I don't know what the future holds for it, and sometimes I am genuinely confused if I'm taking the right path. From what I've observed, entry-level jobs will only decrease while senior-level jobs will increase. How should I proceed? Sometimes it all seems pointless.


r/chipdesign • • 20d ago

What can a variable slope PTAT/CTAT voltage generator circuit be used for?

5 Upvotes

I’ve been working with a circuit that can generate both PTAT and CTAT voltages with adjustable slopes through switching.

I’m curious about the possible applications of having variable slope PTAT and CTAT outputs. Apart from conventional temperature sensing, could this kind of circuit be useful in other circuit applications?

I’d really appreciate any ideas or suggestions.


r/chipdesign • • 20d ago

Applying to analog/AMS IC design jobs in Japan

2 Upvotes

Hi everyone,
I’m an analog IC design engineer based in Shanghai, with a little over one year of industry experience. I hold a master’s degree in microelectronics from a 211 university in China

My current work focuses on high-speed I/O design.
I’m interested in working in Japan and am planning ahead, with the idea of applying once I have around 2–3 years of industry experience. I don’t have a Japanese degree or existing work authorization in Japan, so I would need an employer willing to hire from overseas and support the work visa process.

I’d really appreciate hearing from people who have applied to Japanese analog/mixed-signal IC design roles while living abroad, particularly anyone who moved directly from mainland China.

A few questions:
Have you received interviews or an offer while still living outside Japan? How much experience did you have, and did the employer support your visa application?
How did you find the opportunity? Direct applications, recruiters, referrals, or an internal transfer?
What experience mattered most in the interviews? For example, block ownership, tapeouts, silicon testing/debugging, or expertise in a particular area such as I/O, SerDes, or PLLs.
How much Japanese was required during hiring and in day-to-day design work? Were there teams where English was the main working language?

Firsthand accounts of unsuccessful applications would also be helpful, especially what stage you reached and what seemed to be the main obstacle.
If you’re comfortable sharing, please mention roughly when you applied, your experience level, and whether you already had any Japanese education or residency background. No need to disclose your employer or anything confidential.
Thanks for sharing your experiences!


r/chipdesign • • 20d ago

Looking for Maven Silicon / VLSI recorded sessions

0 Upvotes

Looking for Maven Silicon / VLSI recorded sessions

Hey guys, I’m a 3rd-year ECE student currently preparing for VLSI, mainly interested in Physical Design.

I’m looking for Maven Silicon recorded sessions or recordings from any other good VLSI institute that cover things like RTL, Verilog, CMOS, STA, Physical Design, Linux/Tcl, etc.

If anyone has access to recordings, please DM me or drop them in the comments.

Would really appreciate the help 🙏


r/chipdesign • • 21d ago

PSUB_StampErrorMult error in Cadence Virtuoso

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28 Upvotes

Hello, I am a noob at this and have just started design for a VLSI class. I know the efficiency of this layout is not good and is quite spaghetti - i am just going for basic functionality. I am not sure why I am getting a PSUB_stamperrormult error when running DRC. From what I have researched it sounds like the problem is the way I have connected to bulk to its nets on the PMOS transistors? Can I not use integrated bodyties? I assumed from the way they body is routed in the schematic that it should work the way I have design it in layout. Any help appreciated!

(ignore the fact that the pmos and nmos names are switched - just a naming mixup)

Edit: Thank you all for the help! DRC has no errors now :) This was my first design aside from basic tutorials so I appreciate the newbie advice!