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Spectre S-parameter analysis port definition
Hello,I have a short question, I searched a bit and did not find the answer, on defining ports for sp analysis. Is it possible to use wildcards for defining ports? And if not is there a limit for that...
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Controlling maxstep during tstab in Harmonic Balance
Hello,Spectre seems to set the maxstep for hb (during tstab) to be 1/100th the time period of Tone-1 by default, even if the maxstep specified is much larger. I couldn't find prior discussion/bugs on...
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parasitic extraction question on sub-blocks using top-level RCE
Hi,If I have a RCE .spf file for a top level cell (for example Cell A) which is comprised of multiple sub-blocks, can I use this same RCE file on simulations where I am only using sub blocks in a test...
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How to calculate Output Swing in Cadence?
I am working on a design of a cascode amplifier and I want to measure the output swing. I would like to know if there is a method or a function to use for.
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adding simulator views to a PDK ?.
Hello,Is there a simple way to add simulator views of (eg:eldo or hspice) for the PDK cells, so that you could netlist in the format specified by these simulators?I would like to do this without...
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Moving average function for Calculator
Hi all.Does anyone have a skill code of a moving average function to be included in the calculator?For example, the function will accept a transient waveform and calculate a moving average in a window...
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Simulating 4 bit sequence in one simulation
Hi All,I am simulating a setup with AC analysis and need to vary 4 bits. As of now I am changing the signal bits one at a time to go through all the 16 possible combinations and simulating the setup...
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What is the best practice of optimize both CMRR PSRR and DC Gain of an...
Hi,I am a new guy and learning to use Virtuoso ADE to optimize my amplifier design. I start from a quite simple amplifier design, which is just a diff pair, as the following figure shows.Figure 1....
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How to save sparameter simulation output in different files for different...
I am running sp simulation and saving an sparameter file as output. There is an option in the test to save a file. How do I make this file corner specific? I.e if I run multiple corners, I want...
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How can I get verilog-A code of RPI a-Si TFT model and RPI poly-Si TFT model?
I want to simulate a circuit using a-Si TFT and poly-Si TFT using Cadence.So, I need RPI Polysilicon and Amorphous Silicon TFT model.Therefore, I have searched verilog-A code of RPI Polysilicon and...
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Over-riding default value of the simulation folder path in Assembler and...
Hi All,I am using a maestro view setup in which the simulation folder path is set to ~/simulation which is the default setting.I change it manually to ./simulation to avoid space issues.But after...
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VIVA background color
Hi,I'm currently using virtuoso ICADVM18.1-64b.500.10 and I just realized that I can't change the viva background as in previous versions. When I right-clicked on the viva background and the Graph...
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SKILL GUI
I would like to create a GUI that would be able to display the list of pins that belong to a symbol and to be able to sort/categorize then as SUPPLYs, GNDs, DIGITAL and ANALOG nature.Then be able to...
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IBM/GF bicmos8hp corner setup
Hello Everyone we just started using IBM/GF bicmos8hp process. I noticed at least one of you used this process before. I am sure some of you used similar process. I have a question on corner setup if...
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Liberate RAK - area of cell?
I was looking at the RAK "Using Liberate to Characterize Standard Cells". I was able to run it and see the .lib file being created from the SPICE netlists and the model. The main script pulls in a user...
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spectre alter in MTS environment
Is there any way to tell an alter statement to look for a parameter in the same scope as where the alter statement appears? For example, suppose I have a really basic model file that includes some...
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How to use variables in a paramset?
Hi,I am trying to use a paramset in order to change the timestep during simulation. I am trying something like this:-tran tran stop=trantime errpreset=conservative write="spectre.ic"...
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How to access subckt parameters in sim results?
Is there some particular magic to access a subckt level parameter in the simulation results? For example:subckt mycell (OUT) parameters VDD=1.8 V0 (OUT 0) vsource type=dc dc=VDDends mycellI0 (1 0)...
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Cadence Support Login is busted. Login-issues point-of-contact is broken...
Problems logging in refers to email address.Automated response from email address is: This email address is no longer active.Login to Cadence Support for assistance.Funny but frustrating.I know this is...
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Photodiode in UMC180nm
Hi,I am unable to locate photodiode in UMC180nm PDK. Could you please help me?
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