PSS simulation of Oscillators
Hi,I am simulating an oscillator. In transient simulation, I am getting 10GHz of oscillation, while i am getting 20GHz of oscillation in PSS / HB method. I followed all the steps as mentioned here....
View Articledeepprobe - ams - issue with \ in netlist
Hi,I have a similar issue as in this thread: https://community.cadence.com/cadence_technology_forums/f/custom-ic-design/41411/deepprobe-to-a-bussed-net-in-amsMy testbench looks like this:tb_circuit...
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Exporting data in suffix format from the ADE outputs window
Hi,I tried looking everywhere but I am unable to find a way to export the data I have in the ADE ouputs in suffix format. When I try to export, it always comes out in scientific notation. Is there a...
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Question on Matlab-Maestro integration
Hi all,My Custom IC design Environment version is Version ICADVM20.1-64b.500.25, and my Matlab version is R2020a.I am doing a transient simulation for a switching Track and hold switch and measuring...
View ArticleCan I Undo my changes after i save the schematic in Virtuoso?
As per title, i want just to undo my changes, but after SHIFT+X, i cannot do it?Is there a way to do this?
View ArticleRe: Force Explorer/Maestro to refresh DC operating voltages for annotation on...
Hi, I am currently using ICADVM20.1-64b.500.23 and trying to have DC voltage annotation to display on my schematic after DC operating point simulation via the “Results -> Annotate -> DC Node...
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How can I highlight Mosfets in subthreshold
I saw that you can highlight the Mosfets in triode region using Circuit Condition windowI was wandering if there is an easy way to highlight the Mosfet in subthreshold. I wanted to put as user defined...
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Monte Carlo Mismatch Operating Region Discrepancy
I am running a monte carlo simulation and am observing something inconsistent, think about the design as simple a folded differential amplifier. For a given NFET, on left plot I am showing VGD (DC) in...
View ArticleLight version of virtuoso
Long back, there were different executables icms(schematic/simulation only) and icfb(all tools). The former was lighter, I think. Is there a similar variant of virtuoso, or a command line argument that...
View ArticleSaving output bus in ADE Explorer
Hello, I am using Cadence Virtuoso version 6.1.8-64 bitI have small issue when I save output bus in ADE Explorer, that is:I have 8 binary outputs, I send them after simulation to the Measurement >...
View ArticleEquivalent Noise Charge (ENC) Calculation of a Charge Sensitive Amplifier in...
I am trying to design a Charge Sensitive Amplifier(CSA) for X-Ray detection in Cadence Virtuoso. I have some confusion that how can I calculate the Equivalent Noise Charge (ENC) of my design CSA in...
View ArticleLVS - not compared, number of port 0 in layout
Hello,so after making layouts, when I try to run DRC and LVS chceks, DRC runs successfully without any errors, but when i try to run LVS for the same layout, it shows an error which says "not compared"...
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calibreview lack all nets which connect with res and cap
Hi,all.I use calibre to extracrt no R/C caliberview .I get a werid problem.the extracted calibreview lack all nets which connect with res and cap.but the nets only connect with mos still keep.like fig1...
View ArticleHow to changeDPUPERUU
I would like to temporarily set the tech lib DPUPERUU settings from 1000 to 2000 (So I can create a DEF with the correct numbers for the target tool)I tried this:techSetDBUPerUU(techID...
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Differential .stb analysis by referencing terminals on an av_extracted view...
Hey,I have the following situation:1) I have a differential feedback system with MP0 and MP1 being the input transistors of my feedback amp2) I do a differential .stb by referencing the gate terminals...
View ArticleSpectre: what is the purpose of the "trannoisemethod" parameter?
Hi! I noticed there exist a Spectre parameter for the transient noise called "trannoisemethod", with possible values "default" and "adaptive".I have a few question regarding it:What are the differences...
View ArticleSpectre X: is "noisefmax" treated differently in the various accuracy modes?
Hi! I am finding that the noise levels in my transient simulations change non-negligibly according to the Spectre X accuracy settings, despite explicitly setting the noisefmax parameter (and noisefmin...
View ArticleDifference between Transient and Transient+Noise simulation
HelloI would like to ask about the difference between "Transient" and "Transient+Noise" simulation in Cadence Virtuoso.For me I was thinking that what ever I get from running the transient simulation...
View ArticleDifference between Array Via Spacing and Via Merging
Hello , can you explain what's the difference between Array Via Spacing and Via Merging in quantus?and how i can implant Merge via for all layer = auto in GUI as if there any extraction commands for this?
View ArticleADE Assembler: Global Variable Sweeps vs. Corner Sweeps, Practicality and...
Hi,I admit here that my subject breaks one of the forum guidelines, that questions be as specific as possible. I apologize in advance.Are there any definitive reasons to perform ADE Assembler sweeps in...
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