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Virtuoso Cadence crashes when opening layout viewer
Dear all,I am currently getting this error when I opened layout editor in Virtuoso:*WARNING* PyCell plugin (cnDloPlugin) might not work properly due to the following OA exception:Requested major API...
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How to measure input capacitance?
Hello everyone,I create a symbol(as shown is following figure: CMOS) and use it in other circuit, can I measure the input capacitor of cin, when I set a_2 and b_2 to different value? And how ?Thanks a...
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Plotting phase spectrum
Hi, Is it possible to plot the phase spectrum in cadece virtuoso? The DFT function in the calculator plots the amplitude spectrum, but how can I plot the phase?Basically, I am trying to calculate the...
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WARNING (OCN-6038) Results dc are not available loading OCEAN script
Hi,I'm trying to loading an OCEAN script automatically generated on the ADE-L environment of Cadence virtuoso.Virtuoso Custom IC Design Environment version IC6.1.8-64b.500.17I have simplified the ocean...
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Report CPU time directly in ADE Assembler
Hi,I am currently building simplified verilog-a versions of our blocks, inside a larger mixed-mode system, in order to speed up simulation (CPU) time. As I am experimenting with different...
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How to treat parasitic device as open for LVS
I have a resistor that i'd like to treat as an open for LVS. Right now there is a cdf user property:lxRemoveDevice=(short(p1 p2))I'd like the device to just be removed instead. Changing "short" to...
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TIMEOUT feature
I came across a post in which an options file created in the install_dir/share/license path with a TIMEOUT command can help in returning licenses to the pool when idle. But I wanted to check if this...
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PSS and TRAN jitter results not matching for very simplistic testcase
In order to better understand the PSS and TRAN noise simulations, I created a very simple testbench "Vsource+Buffer" (see below) and compared the PSS and TRAN phasenoise and jitter results.The...
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strobe period in tran dynamic parameter
Hi,I try to use strobeperiod as a dynamic parameter in transient simulation. But the sim log says: ERROR (SPECTRE-16557): In analysis 'tran', the parameter 'strobeperiod' defined in `paramSet1tran`...
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how to get values of sampling points
Hello everyone,I want to sample some points of a wave and store values through expression. I tried to do it like: value(v("/cout" ?result "tran") 2e-11 ?period 1e-12 ?xName "time")Where "2e-11" is...
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Cadence Calculator Function for the difference between the abscissa of the...
Hi,I am running a dc simulation for Schmitt Trigger .Its voltage transfer characteristic curve is shown in the following figure (the green curve V=Vout ).And the red curve(V=Vin) has a slope of 1 .I...
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Import several pwl signals through one file
Hello everyone,I'm trying to import 300 pwl signals as input of my circuit and run the simulation. I already know how to import single pwl signal as input (use vsource and select pwl file), but is it...
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Copy measurements from one assembler to another
Hi,I have a meastro which have a lot of measurements. I want to copy only the measurements of this maestro to another. Is there a way other than manually copy pasting the measurement...
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My ADE L gives error of not being able to descend into any of the views
Hi,I have a verilogA model and I'm trying to use it in my simulations. However, it gives me a netlisting error, saying it can't find the view. I don't really know how to handle this since I already...
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Segmentation fault: core dumped
Hello everyone,I have a simulation with 50000 sweep points, there are few unfinished points/errors after simulation, so I try to rerun them. But then virtuoso crashes and I get error: segmentation...
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Changing range of sweep in DC analysis leads to different results
Hi there,I'm building a two-stage fully differential amp and I try to find the proper DC operating point, so I swept the width of the PMOS on the most top of first stage(i noted in the pic) and looked...
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Stability Analysis Issue on Schematic level
Stability Analysis Issue on Schematic Hi There, I am trying to run stb analysis on schematic level (pre-layout). Breaking loop with metal resistor at one level inside (using IC6.1.8.64b.500.17)...
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use "awvSaveToCSV" without overwriting current contents
Hello,I'm running a simulation with 50000 sweep points and I want to export all results in one csv file use awvSaveToCSV:awvSaveToCSV( VT("/cout") VT("/cin") "test.csv" ?from 20p ?to 800p ?step 2p)The...
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Can we change the options for turning on/off the noise contributors in the...
I would like to turn on/off the noise contributors and then run the various noise analysis. Something as shown below. Is this supposed to work? The second options statement doesn't seem to take...
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