Saving the image of many output signals in Cadence Virtuoso
Hello,I have a problem when I try to save the image of my circuit that have many outputs, the problem is that the saved image capture only the visible signals from the simulation result viva window, as...
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Maestro - use other output as spec value.
Hello.I define some expression in outputs and want to use it in spec (range).VAR("") and just output name in the spec field don't work.
View ArticleHow to plot current results along with last run results in the same...
I'm back to Cadence after three years out, and unfortunately good old AWD has gone. I have Ic618 and Viva. Yesterday I figured out how to plot outputs in Viva and restore a prior run's results onto...
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Models for components in sample lib
Hi All,I am using digital gates (inverter, nand ) from Sample library.Can anyone give some idea where to get the models for these digital gates inside the Sample library as during simulation I am...
View Articlewrite *.scs file to use model library
i have TSMC RF fr013.scs and i cant directly use this file at ADE>model library setup>global model fileError found by spectre during circuit read-in. ERROR (SFE-675):...
View ArticleChange default increment of deriv
Hello,I try to use "deriv" function to analyze the slope of some signals, I'm using transient simulation, so X-axis is time. For "deriv" function, what is the default increment or step size of the...
View ArticleAccess Top-Level Hierarchical Net with BSource
Hello,I am trying to define a bsource within a subcircuit, which addresses currents and voltages from the top-level hierarchy. For currents, this seems to work, but for voltages it does not. My...
View ArticleHow can I import verilog-A (.va) file in the cadence virtuoso?
I have a verilog-A TFT model file, but I do not know how can I import this model in the cadence virtuoso.How can I import this model into the cadence virtuoso?Please tell meThank youyysunj
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some questions about pz analysis
I am simulating the open-loop characteristics of a two-stage op amp. The simulation circuit is as follows (using a large resistor R0=1Gohm and large capacitor C2=1KF to form a feedback loop).I...
View ArticleHow does the correlation constraint "cc" affect the correlation of mismatch...
Hello,I am using the correlation constraint to tie together Monte-Carlo mismatch parameters for a number of instances of an ADC.Example syntax statistics { correlate dev=[ I0.* I1.* ] cc=1.00}When cc=1...
View ArticleThermal noise modeling
Hi. I am interested in calculating the thermal noise power ("id.src" value in noise section of the result browser) of a MOSFET modeled by the BSIM4.5 model in Matlab. During my dc as well as noise...
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Using existing maestro view
Hi All,I am trying to use an design shared with me that has a testbench schematic and associated maestro view.When I am trying to open the maestro view it throws a message that "design associated with...
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Violations display in ADE L
Hi all,I created a set of parameter checks using the Device Check Specification in ADE L (Simulation --> Device checking), and activated the related options (Simulation --> Options --> Analog,...
View Articlebandwidth function in Virtuoso calculator
Hi All,I am trying to use the bandwidth function in Virtuoso calculator in IC6.1.8Do I have to ensure that the input signal to the bandwidth function is in a particular format like non db20 or only a...
View ArticleIs it possible to do this in VerilogA?
Hi,Is it possible to compile one part of my verilogA code if an input parameter is set and not compile it when the parameter is not set? Note that this is not like executing a set of commands in an if...
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Issue in accessing PSF directory with ocean script.
Hello, I'm writing down this paragraph because I couldn't fix strange issue during running ocean.I already ran the same testbench with ADLE, and saw it is working okay.However, when I extracted ocean...
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How to backannotate Monte-Carlo DCOP simulation results to schematic
I need to backannotate a single run MC simulation. It does not work nicely in my setup.First, I need to click op on the calculator, after that the annotation pops up.But the second time I run MC, the...
View ArticleStatistical file for Monte Carlo analysis
Hi, I am new to Monte Carlo simulations. I am trying to do the analysis for PUF using Monte Carlo simulation. I am using IC 6.1.7 version and UMC 90nm technology. I am having some basic questions,...
View ArticleSpectre 16775 Warning
Hi,While running reliability analysis for UMC90nm i am getting the following warning message. Warning SPECTRE 16775: Cannot run the aged model because one or more 'gradual_aging_alter' statements have...
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