
Closed
Posted
Paid on delivery
Abstract: Manufacturing-Ready 130nm CMOS Inverter Design The objective of this project is to design, verify, and prepare a standard CMOS inverter for fabrication using the SkyWater 130nm Open-Source PDK. Unlike theoretical projects, this work follows a complete "Silicon-to-GDS" flow. The process begins with Schematic Capture and Pre-Layout Simulation to establish electrical baselines. This is followed by Physical Layout, where the geometric structures of the NMOS and PMOS transistors are manually drawn according to strict foundry Design Rule Checks (DRC). The design is then validated through Layout vs. Schematic (LVS) to ensure physical-electrical equivalence. Finally, Parasitic Extraction (PEX) is performed for Post-Layout Simulation to account for real-world wire resistance and capacitance, culminating in the generation of a GDSII stream file for tape-out readiness. The Step-by-Step Procedure expectation: Step 1: Schematic and Testbench Setup * The Action: "Start by drawing the inverter circuit in Xschem using Sky130 primitive components." * The Goal: To define the transistor sizes (Width/Length) and run a DC sweep to see the Voltage Transfer Curve (VTC). Step 2: Pre-Layout Simulation * The Action: "Use Ngspice to simulate the 'ideal' circuit." * The Goal: To measure the switching threshold (V_M) and basic propagation delay without any wire interference. Step 3: Physical Layout (The "Manufacturing" Part) * The Action: "Use Magic VLSI to draw the physical layers—N-well, P-diffusion, Polysilicon, and Metal-1." * The Goal: To create the actual physical footprint of the inverter. Must ensure it is DRC Clean, meaning it follows all the foundry's safety rules for manufacturing. Step 4: Verification (LVS) * The Action: "Run Netgen to perform Layout vs. Schematic (LVS) verification." * The Goal: To prove that the physical drawing (Step 3) perfectly matches my electrical diagram (Step 1). If they don't match, the chip won't work. Step 5: Post-Layout Extraction and GDSII * The Action: "Extract the 'parasitics' (hidden resistance and capacitance) from the layout and re-simulate the circuit." * The Goal: To show the true performance of the chip. Finally, export the GDSII file, which is the final binary file the factory uses to print the silicon. Summary of Requirements 1. Technology: SkyWater 130nm (sky130A). 2. Tools: Xschem (Schematic), Magic (Layout), Netgen (LVS), Ngspice (Simulation). 3. Required/ Expected Handoffs : .spice (Schematic), .mag (Layout), .gds (Manufacturing file), and a comparison report of Pre-layout vs. Post-layout delay and a complete academic project report including all the details. NOTE: **I need to give a demo of this project. So, everything must also be installed on my laptop/PC and also you will have to explain me the process and how to answer any questions which might be asked during the demo.** Acceptance Everything should open without errors in the stated open-source tools, LVS must be clean, and the timing comparison must be clearly tabulated in the report. Deliverables should be zipped and ready for download along with installation of tools and explanation of the workflow so I can demonstrate the full flow during my presentation.
Project ID: 40213340
43 proposals
Remote project
Active 1 day ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
43 freelancers are bidding on average $970 USD for this job

Hello, As Live Experts LLC, we extend our proficiency in Electrical Engineering and Simulation to offer you a top-notch service for your Sky130 CMOS Inverter full flow project. Our team has extensive experience using the specific tools - Xschem, Magic, Netgen, Ngspice - required for each step of the process from Schematic Capture to generating GDSII file. I am confident that we can ensure your project opens without any errors and deliver a clean LVS. We understand your need for a clear timing comparison table on Pre-layout vs Post-layout delay as well as a comprehensive academic project report that encompasses all the details. Our team takes research writing very seriously and is adept at delivering well-written, detailed yet concise reports. Moreover, our domain expertise spans across multiple disciplines including computer science, engineering, and statistics/data analysis which will prove valuable in providing additional insights beyond just manufacturing-ready circuit design. To further demonstrate our commitment towards your project's success, we will not only deliver all required file formats (.spice, .mag , .gds), but also install and explain the process of using all necessary tools on your laptop. We believe that complete understanding of the workflow is key to presenting a successful demonstration. Let's proceed together and transform your ideas into reality with meticulous attention to all steps in this "Silicon-to-GDS" flow. Thanks!
$1,500 USD in 4 days
8.3
8.3

With my extensive background in Electrical Engineering and mastery over various designing and simulation tools like Xschem, Magic, Netgen, and Ngspice, I'm more than equipped to exceed your expectations on this project. Having worked on several intricate CMOS designs before, the Sky130 CMOS Inverter Full Flow aligns perfectly with my comfort zone. Being thorough with DRC for "manufacturing," it's guaranteed that your design will be meticulously crafted and aligned with all the foundry's regulations. Moreover, I completely understand the need to achieve the precise electrical equivalence between Schematic and Layout via LVS, as any discrepancy can undermine the entire project. As a vigilant engineer with a fixation for detail, such errors are unknown entities in my work and an explicit, clean LVS layout is confirmed once I'm done. To add value to our collaboration, I can also educate you on the workflow and functionalities of each tool required for this project along with strategizing answers for potential questions during your demo. This ensures a seamless transition from our project completion to your demonstration process. Let’s turn this theoretical design into tangible silicon with assured functionality!
$1,500 USD in 20 days
8.2
8.2

I am a skilled and reliable Embedded Systems Engineer with over 6 years of hands-on experience in Arduino, ESP32/ESP8266, and microcontroller-based development. I specialize in designing efficient, stable, and scalable embedded solutions, turning ideas into fully functional hardware-software systems. I have a strong background in electronics, sensors, communication protocols (UART, I2C, SPI, MQTT, WiFi, BLE), and real-time embedded systems. My development approach focuses on clean, well-structured, and well-documented firmware, ensuring long-term reliability and easy maintenance. I also provide thorough testing, debugging, and performance optimization, including power efficiency improvements where required. I am a detail-oriented engineer with strong problem-solving skills and extensive experience in hardware debugging and firmware optimization. Beyond technical expertise, I value clear communication, meeting deadlines, and maintaining high client satisfaction. I work closely with clients to fully understand project requirements and deliver high-quality results. Pricing is flexible and can be discussed based on project scope and complexity. I am open to both short-term and long-term projects. Let’s work together to build a professional, reliable, and efficient embedded system for your needs.
$1,125 USD in 20 days
7.4
7.4

Hello, I will deliver a complete Sky130 CMOS Inverter Full Flow (sky130A) from schematic to GDSII, ready for tape-out. I have practical, hands-on experience with open-source PDK flows and silicon-to-GDS verification, including schematic capture in Xschem, pre-layout and post-layout simulations in Ngspice, and physical layout in Magic, with LVS verification via Netgen and parasitic extraction for accurate timing. I’ll provide clean, DRC-compliant NMOS/PMOS layouts, a thorough LVS/PEX verification report, and a post-layout timing comparison to clearly show the impact of parasitics. All deliverables will be organized for easy demo setup, including scripts to reproduce steps on your laptop. I will also generate the final GDSII and a complete report detailing all steps and results, ready for your presentation. What specific inverter drive strength and load conditions should I target in the VTC and timing benchmarks for your demo? Best regards, Marko
$1,300 USD in 25 days
6.7
6.7

Hello, I’ve read your Sky130 CMOS Inverter Full Flow project and I’m confident I can deliver a manufacturing-ready inverter using sky130A with a complete silicon-to-GDS flow. I will start with schematic capture in Xschem to set NMOS/PMOS sizes and run a DC transfer sweep, then use Ngspice for pre-layout verification to fix switching threshold and delays without parasitics. In the layout stage I will craft the N-well, P-diffusion, polysilicon, and Metal-1 with strict DRC adherence in Magic, followed by LVS with Netgen to ensure electrical-physical match. Post-layout extraction will be performed to capture parasitics and re-simulate to show real timing, culminating in a ready GDSII. Deliverables will include .spice, .mag, and .gds files, plus a detailed comparison report of pre- vs post-layout delay and a complete academic project report. I will also provide an installation-ready package so you can demo the entire flow on your machine, with step-by-step guidance and anticipated questions answered. Do you want specific transistor sizing targets (W/L) for NMOS/PMOS? Do you have a preferred VDD and target VTC characteristics for your design? Are there any layout constraints beyond DRC that I should follow (space, pitch, or metal routing preferences)? Should I align the design revisions with a particular sky130 family revision or open-source PDK snapshot? Do you need LVS pass criteria explicitly documented in the report? How detailed should the parasitic extraction be (first-order
$1,500 USD in 11 days
6.0
6.0

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Embedded C Programming. VHDL/Verilog, Quartus/Vivado, LABView/ Multisim/PSPICE/VLSI MATLAB/SIMULINK Network Simulator NS2/NS3 Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32. IDEs like Keil MDK V5, ATmel studio and MPLab XC8. PLCs / SCADA PCB Designing Proteus, Eagle, KiCAD and Altium IOT Technologies like Ethernet, GSM GPRS. HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.
$1,125 USD in 7 days
6.1
6.1

Hello there! I am leading an American Licensed Engineering team with expertise in Structural and Civil Engineering, tailored to meet the demands of each project. With over 20 years of experience, we offer innovative solutions. For your Sky130 CMOS Inverter project, we excel in the 'Silicon-to-GDS' flow. Our process includes Schematic Capture, Physical Layout, and Post-Layout Simulation using tools like Xschem, Magic VLSI, and Ngspice. We guarantee a clean LVS, accurate timing comparison, and thorough documentation for your demo. Let's create a flawless CMOS inverter together.
$750 USD in 2 days
4.7
4.7

Best Sky130 CMOS Inverter Design Partner ⭐⭐⭐⭐⭐ Hi, Thanks for sharing the scope clearly. I’ve worked on CMOS and VLSI projects involving schematic capture, layout, LVS, and post-layout extraction. Your Sky130 CMOS inverter project is very doable: the goal is to design, verify, and deliver a manufacturing-ready inverter from schematic to GDSII with full simulation and demo-ready documentation. ✅ How I’ll Help You Succeed 1. Set up the schematic and testbench in Xschem and perform pre-layout Ngspice simulations to define transistor sizes and VTC. 2. Conduct LVS verification with Netgen to confirm the layout matches the schematic, followed by post-layout parasitic extraction and simulation to capture real-world performance. 3. Prepare a complete report comparing pre- and post-layout performance, the GDSII file for tape-out, and demo setup instructions. ✅ I’ve delivered multiple academic and industrial VLSI projects where accuracy, DRC/LVS compliance, and demonstration readiness were critical, with full documentation and clean deliverables. ✅ Before I start, one quick thing: Could you confirm if you want any additional inverter variants or load conditions tested for the demo, or should I optimize for a standard single-stage inverter? If you share that, feel free to message me, and we can align quickly. Best, Prat PCB Must Innovations
$1,000 USD in 12 days
6.4
6.4

Hello there, I am excited about the opportunity to work on your project titled 'Sky130 CMOS Inverter Full Flow.' My experience in circuit design and electrical engineering equips me to tackle the challenge of designing, verifying, and preparing a standard CMOS inverter for fabrication using the SkyWater 130nm Open-Source PDK. I will meticulously follow the 'Silicon-to-GDS' flow, starting with Schematic Capture and Pre-Layout Simulation to establish electrical baselines. The Physical Layout will be meticulously crafted in Magic VLSI, ensuring compliance with strict foundry Design Rule Checks (DRC). Verification through Layout vs. Schematic (LVS) and Parasitic Extraction (PEX) will be conducted to ensure the design's integrity. For the demo, I will install all required tools on your laptop/PC and provide a detailed explanation of the entire process. Your presentation will be supported with a full demonstration of the project workflow and answers to any potential questions. Looking forward to starting this project and delivering outstanding results. How can we proceed with the next steps? How soon would you like to schedule the installation of the tools and the explanation of the project workflow?
$750 USD in 1 day
4.1
4.1

Hello Sir, I am interested in working on the 'Sky130 CMOS Inverter Full Flow' project to design, verify, and prepare a standard CMOS inverter using the SkyWater 130nm Open-Source PDK. With a focus on the 'Silicon-to-GDS' flow, I will execute Schematic Capture, Physical Layout, and Verification steps meticulously. My experience in CAD/CAM, Circuit Design, and Electrical Engineering equips me to deliver a clean LVS and detailed timing comparison report. Rest assured, I will also guide you through the project process for a successful demo. When can we discuss further details and start the project? How soon would you like to proceed with the project collaboration?
$750 USD in 2 days
4.0
4.0

Hi, I'm Aisha Mujahid, an academic expert with 12+ years of experience in research support, writing mentorship, and scholarly editing. I help students and professionals enhance their work for clarity, impact, and academic success. From refining essays to polishing manuscripts, I offer tailored guidance to elevate your writing and help you achieve academic goals. I specialize in Essays, Research Papers, Case Studies, Dissertations, and Any Other Assignments. Every project I deliver is original, Plagiarism and AI Free, Properly Referenced, and Tailored to your Specific Requirements. I have strong expertise in academic referencing and formatting styles, including APA, Harvard, Chicago, MLA, Vancouver, IEEE, and OSCOLA, ensuring accuracy, consistency, and full compliance with university and journal guidelines. If you’re looking for dependable academic support that truly delivers results, message me to discuss it further. Thank You!
$750 USD in 1 day
3.9
3.9

Hello Employer, I am excited about the opportunity to work on your project, "Sky130 CMOS Inverter Full Flow." With extensive experience in CAD/CAM, electrical engineering, and circuit design, I am well-prepared to deliver a robust solution that meets your requirements. I understand the critical nature of this project, which involves designing a manufacturing-ready 130nm CMOS inverter using the SkyWater 130nm Open-Source PDK. I am well-versed in executing a comprehensive "Silicon-to-GDS" flow and have a strong command over the required tools such as Xschem, Magic VLSI, Netgen, and Ngspice. My approach will begin with a detailed schematic capture and pre-layout simulation to establish a solid electrical baseline. I will meticulously craft the physical layout, adhering to strict DRC rules to ensure a clean design. Following that, I will perform LVS verification to guarantee that the physical layout matches the schematic accurately. The final steps will involve parasitic extraction and the generation of a GDSII stream file, ensuring tape-out readiness. Moreover, I will provide you with a clear and concise academic project report, including a comparison of pre-layout and post-layout performance. To facilitate your demo, I will assist you in installing all necessary tools on your laptop/PC and guide you through every step of the process to ensure you are fully prepared to answer any questions. I am eager to bring my expertise to your project and ensure a successful outcome. Thank you for considering my proposal. Best regards, Dragan M.
$1,000 USD in 5 days
3.7
3.7

My name is "Usama Safdar" and I am a Ph.D degree holder which means I am highly-capable to tackle this project "Content Editor " with 100 percent accuracy. I am a professional writer with over 6 years of experience in writing; Essays, Research Summaries, Thesis, Dissertation, Lab Reports and Case Studies. I always provide High-Quality Solutions within the shortest possible time with all instructions followed against very reasonable prices. I can manage works even with shortest deadlines like; "2500 words work in just 6 Hours" with very reasonable time. As a pro academic writer I am also familiar with all the referencing styles; such as APA, Harvard, OSCOLA, IEE, MLA etc. I always provide plagiarism-free solutions and as a prove I also provide "FREE Turnitin reports". For Samples, please visit my profile https://www.freelancer.com/u/SolutionMart Please message me to start the discussion. Thank You
$750 USD in 1 day
3.5
3.5

Hi,I have seen your JD carefully. I am a senior VLSI design engineer with extensive experience in the SkyWater 130nm (sky130A) PDK and the open-source EDA toolchain. I will deliver a complete "Silicon-to-GDS" flow for your CMOS inverter, starting with an Xschem schematic and Ngspice pre-layout simulations to establish baseline switching thresholds. I will then manually draw the physical layout in Magic VLSI, ensuring it is DRC clean and passes LVS verification via Netgen to prove physical-electrical equivalence. My process includes Parasitic Extraction (PEX) for post-layout simulation to account for real-world wire resistance and capacitance before generating the final GDSII tape-out file. To ensure your demo is successful, I will remotely install the entire toolchain on your PC and provide a detailed walkthrough of the workflow. I will also prepare you for your presentation with a technical comparison report and a guide to answering common questions regarding propagation delays and layout geometry. Best Regard. Leonid Y.
$1,125 USD in 2 days
3.4
3.4

⭐⭐⭐⭐⭐ This is a full silicon-to-GDS academic flow, and it’s absolutely in my wheelhouse. I have hands-on experience with the SkyWater 130nm (sky130A) open-source PDK and the exact toolchain you listed: Xschem, Ngspice, Magic VLSI, and Netgen. I don’t treat this as a “toy inverter” — I follow a manufacturing-correct flow with clean DRC/LVS and defensible post-layout results. How I’ll handle your project: Schematic & Testbench Properly sized NMOS/PMOS using sky130 primitives, DC sweep for VTC, and baseline delay measurement. Pre-layout Simulation Ngspice simulations with clear extraction of VM and propagation delay (documented). Manual Physical Layout (Magic) Clean, compact inverter layout using N-well, diffusion, poly, contacts, and M1 — DRC clean under sky130 rules. LVS (Netgen) Schematic vs. layout match proven and documented. PEX & Post-layout Simulation Parasitic extraction, re-simulation, and clear pre- vs post-layout delay comparison table. Deliverables (exactly as requested): • .spice, .mag, .gds files • LVS/DRC clean results • Pre vs post layout timing comparison • Full academic-style project report • Zipped, demo-ready package Demo support: I will install everything on your machine, walk you through each step, explain why each step exists, and prep you for typical viva/demo questions (DRC, LVS, parasitics, VM shift, delay degradation, etc.). If you want, I can also keep the layout intentionally “explainable” so it’s easy to defend live.
$1,125 USD in 7 days
3.0
3.0

I am a VLSI Design Engineer (M.E. VLSI Design, Anna University) with hands-on experience in complete ASIC physical design flows including schematic capture, DRC/LVS, timing analysis, and layout verification. I can deliver a fully manufacturing-ready CMOS inverter using the SkyWater 130nm (sky130A) open-source PDK, following a complete Silicon-to-GDS flow using Xschem, Ngspice, Magic VLSI, and Netgen. The project will include schematic design, pre-layout simulation, DRC-clean manual layout, LVS-clean verification, parasitic extraction, post-layout timing comparison, and final GDSII generation. All required handoff files (.spice, .mag, .gds) will be provided along with a clear pre- vs post-layout delay report. Additionally, I will help you install all tools locally and guide you step-by-step on how to demonstrate the full flow and confidently answer technical questions during your project demo.
$750 USD in 2 days
2.5
2.5

Greetings! I’m a top-rated freelancer with 16+ years of experience and a portfolio of 750+ satisfied clients. I specialize in delivering high-quality, professional CMOS inverter designing services tailored to your unique needs. Please feel free to message me to discuss your project and review my portfolio. I’d love to help bring your ideas to life! Looking forward to collaborating with you! Best regards, Revival
$750 USD in 7 days
1.5
1.5

Hello, I am ready to deliver a complete Sky130 CMOS inverter design, ensuring all steps from schematic capture to GDSII file generation are flawlessly executed. With proven experience in this process, I will provide a clean LVS, comprehensive reports, and guide you through installation and demonstration. What specific outcomes or metrics are you looking to achieve from your project demonstration? Thanks, THE CALIFORNIA STUDIO
$750 USD in 1 day
0.0
0.0

Hello. As an experienced Electrical Engineer, I can provide expert services for the Sky130 CMOS Inverter Full Flow project. Based on your project details, I understand the need to design, verify, and prepare a standard CMOS inverter for fabrication using the SkyWater 130nm Open-Source PDK. My relevant experiences include working extensively with Xschem, Magic, Netgen, and Ngspice for schematic capture, physical layout, LVS verification, and simulation. Looking forward to working with you to achieve the project goals efficiently.
$750 USD in 4 days
0.0
0.0

Hi there, Thank you for the opportunity to submit this bid for your project. I’m genuinely interested and excited about what you’re building, and I can see real potential for it to create value for your users as well as for your business. From what I understand so far, the goals are clear, realistic, and aligned with the kind of work I enjoy doing—solving concrete problems, making things easier for people, and delivering something that looks professional and feels effortless to use. I bring a mix of technical skill, structured planning, and practical communication. That means you can expect clear milestones, transparent pricing, and straightforward updates rather than jargon. My goal is to make the process feel organized and predictable for you, while still leaving room to improve details as we learn more during the project. If we move forward, I’ll focus on making the experience smooth for you: clear expectations, no surprises, and a result that matches what we agreed at the outset. Regards, George M.
$750 USD in 14 days
0.0
0.0

Riverside, United States
Member since Feb 8, 2026
$30-250 USD
$750-1500 AUD
€250-750 EUR
$30-250 AUD
$250-750 USD
$1500-3000 USD
₹37500-75000 INR
₹12500-37500 INR
$3000-5000 USD
$250-750 USD
$250-750 CAD
₹37500-75000 INR
min $50 USD / hour
₹600-1609 INR
$750-1500 USD
$12-500 SGD
$2-8 USD / hour
$30-250 USD
£3000-5000 GBP
₹750-1250 INR / hour