Transient noise
Hello,I am dealing with the design of an oscillator. When I run the transient, the oscillator does not oscillate. Then when I define the transient noise as Noise Fmax = 30G, the oscillator oscillates....
View Article45nm model detialed operation parameter list
Based on the previous post, we can use commands like spectre -h bjt to search for the possible device operation parameter available to call.However, I cannot find the corresponding one for the gpdk45nm...
View Articleprint values for dc analysis
I'm currently using spectre for the dc analysis for a simple NMOS, represented as mn0 (d_n g_n 0 b_n) g45n1svt w=w_n l=l_nvg_n_inst (g_n 0) vsource dc=vg_nI would trying to save the mn0:vsat for...
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when I created via，this window appeared
The pdk is FREEPDK15how to deal with this situation?THANKS!
View Article*** CRASHED *** [signal 11] Segmentation fault (core dumped) invoking tempus
what can be the problem?i run tempus it gives me this warning **WARN: (IMPOAX-1142): Current Tempus Timing Signoff Solution hierarchy has cds.lib plug-in installed and both cds.lib & lib.defs files...
View Articleaccurate net length calculation in virtuoso
Hi, Is there a way to accurately measure total net length after auto routing the circuit in virtuoso layout GXL?RegardsSupriyo
View ArticleIs it possible to change environment variables without relaunching Cadence?
I am changing environment variables for VIVA, e.g., font size, title font size, etc, through .cdsinit_personal file.But I need to relaunch Cadence to see the effect.Running source .cdsinit_personal...
View ArticleMonte Carlo simulation for Ultra-sim
Hi, i am trying to analyze the monte Carlo simulation after giving inputs to the schematic by Vector file. However while run , i am getting error. Can you please help and suggest solution for...
View ArticlePASSIVE MIXER DESIGN
Hi,I am starting out on doing simulations on cadence. I have materials to simulate an active mixer design, but there are none for passive. How do i start out, if i want to design a double balanced...
View Articleruler snapping error in layout
Hi,When using a ruler in the layout, mouse pointer to suddenly move to the end of the screen.It doesn't always happen, but often. (It seems like a random phenomenon)Is there any way to solve...
View Articleprobing current through an inherited pin
I use inherited pins for my supply. If I had used an explicit supply pin, I could have probed the current entering that pin to get to know the current consumed by that subcircuit. But since I'm using...
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How to annotate DC operation points in monte calro simulation?
Hello! I want to annotate DC operation points in certain monte calro iteration. But the button is always grey.I have save the data in monte calro simulation setup. I also select "save DC operation...
View ArticleQRC Virtuoso invoke setup
Virtuoso Version: 6.1.8Quantus Version: 22.1.0-p089Assura: 4.1cshrc script:set path = ($ASSURA_HOME/tools $path)set path = ($QRC_HOME/tools $path).cdsinit...
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How to set the same mismatch for subcirduits
Hello! When I run monte calro simulation, I want to set the same mismatch for I5, I6, I7 in the schemetic below. They are the same subcircuits.I browse the forum and documentation I found this...
View ArticleFaster ADE Assembler startup?
Hi,I see that Assembler loads all existing tests on startup, although maybe only ONE is active. My Assembler setups often have 20 Tests or more, so I wonder is there an option to load only the active...
View ArticleError "Unsupported tolerance specification" while referencing a pspice level...
Hi all,I am trying to create a simulation with Spectre 20.1.0.534 which contains a PSPICE model of a discrete transistor. This transistor model (level=2) contains tolerance parameters like...
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How to add holder text to stringfield?
I can't find any option in hiCreateStringField to achieve this effect.Is there any other method?
View Articleusing calcVal with parametric parametric sweep
Hi,In my simulation test bench I have three tests. I define an expression in test one which I want to pass to test 2 and 3 with calcVal. Also an expression from test2 is assigned through calcVal to a...
View ArticleLiberate_AMS, how to add RC load on transmitter PAD for lib
Hello everyone, When I use liberate-ams to generate lib for transmitter circuit. the output pad need add load cap and termination res of 50ohm. I can't find how to add this in the user-guide. But...
View ArticleSchematics are getting locked
I have recently started using a new PDK for one of my projects.In this PDK, they have provided us with a work folder, we have to source the cshrc file there.All of the work, related to this PDK is...
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