Quantcast
Channel: Cadence Custom IC Design Forum
Browsing all 4886 articles
Browse latest View live

Image may be NSFW.
Clik here to view.

Associate nangate cell library with freepdk45 tech lib.

YI picked up freepdk45 and nangate from somebody's junkyard.Nangate is supposedly developed for freepdk, but in this case, it has its own tech file.The LSW looks so different, what should i do to...

View Article


Image may be NSFW.
Clik here to view.

What does such sign mean in the data view

Does any one know the meaning of such a sign in the data view? why it is different from others?

View Article


Image may be NSFW.
Clik here to view.

Simulation of an inverter using FinFETs

Hi , I'm trying to simulate a simple inverter circuit using FinFET  , I have downloaded the ASAP7_PDKandLIB and added its path in library path editor .Now when i try to simulate it in ADE L , I'm not...

View Article

Image may be NSFW.
Clik here to view.

mtline 2D solver ignoring dlosstype/dloss

I have a mtline instance in a spectre netlist that looks like this.  Note dlosstype=tangent and dloss=[0.1] (so really lossy)ITL (net1 net2 net3 net4 0 0) mtline len=100m m=1 fmax=10G...

View Article

Image may be NSFW.
Clik here to view.

Online Chat Rooms - CandyChat

Without any doubt, you can use this Online Chat Rooms and search for any strangers in your nearby area. And not only its facility friends and family members to be touch but at once it’s help for...

View Article


Image may be NSFW.
Clik here to view.

What is thermal noise called

Hello,My cadence Virtuoso version is IC6.1.8-64b.500.9 and my Spectre simulator version is sub-version 19.1.0.237.isr3.From my understanding sfl stands for the flicker noise of a transistor and what is...

View Article

Image may be NSFW.
Clik here to view.

Input Capacitance Measurements of Digital Cells in Cadence Liberate

Hi,I have a requirement to characterize a set of standard cells of following type : All of these custom cells have the same transistor arrangement, i.e. a transmission gate pair followed by an...

View Article

Image may be NSFW.
Clik here to view.

PVS - QRC RUN FAILURE--LBMISC-215294

Hi there,I was running a PVS- QRC but ran into an error--ERROR (LBMISC-215294): can't open string file /tmp/strtabx45RH3 in map_file_to_strtab ().PVS version is 15.2The QRC is Version 13.2.0-s329.The...

View Article


Image may be NSFW.
Clik here to view.

Ability to run stb analysis without editing schematic to place iprobe

Hello,Is there some way to run an stb analysis with spectre without having to edit the schematic and manually place an iprobe (or 0V source)? I am looking for a way to be able to run stability checks...

View Article


Image may be NSFW.
Clik here to view.

Transient simulation extract specific voltage/time data

Hi,Is it possible to set a range of voltage in transient simulation, so the simulator can dump those data only without getting the whole period of transient simulation result?The reason I want to do...

View Article

Image may be NSFW.
Clik here to view.

for converting a rectangular fluidgaurdring in to a polygon

Hi,I tried to convert a rectangular fluidgaurdring in to a polygon.But I got a warning.*WARNING* (LE-105557): The instance cannot be updated since the device Convert to Polygon fluid function could not...

View Article

Image may be NSFW.
Clik here to view.

Trying to understand Cadence UNL netlisting

Hi,I have a simple mixed signal schematic. I am running Cadence UNL netlister. I would like to see the output from the analog netlisting process. If I open the "netlist" file under analog directory, it...

View Article

Image may be NSFW.
Clik here to view.

Different output results of a system with adding new circuits

Hello everyone,I had a strange problem regarding my system simulation in Cadence. My Cadence version is IC6.1.4.485. I am working on the simulation of a high-frequency PLL-based Clock and Data Recovery...

View Article


Image may be NSFW.
Clik here to view.

What is the working of 2 switches as shown below.

I aim to make either R5(left) or R6(right) to conduct at a time. I don't understand the terminology of this switch when it says the ON voltage and the OFF voltage because when I see the operation only...

View Article

Image may be NSFW.
Clik here to view.

DRC Error Virtuoso 6.1.8 PVS 16.12

hi,I am trying to create the layout of my schematics. Unfortunately I have a few big capacitors and the error I get when I run DRC check is : M6.DN.5:L :M6 density inside CTMDMY over any 200 um x 200...

View Article


Image may be NSFW.
Clik here to view.

Error running Monte Carlo in ADE Explorer with MDL Control File

Hi allI'm simulating a trimming sequence in ADE Explorer using a MDL control file. It is woking fine for corner simulation but once I run it for Monte Carlo validation, it gives me the following...

View Article

Image may be NSFW.
Clik here to view.

Problem in accessing the X-values of a signal waveform

Hello, I have this attached waveform that represents a frequency response of a model,I am trying to find the frequency at where the output is maximum which represents for me the f2. the f1 I should...

View Article


Image may be NSFW.
Clik here to view.

. dot vs / slash when saving signals in Ocean

I'm exporting all the net voltages (for a specific time) from a circuit and I noted that if I perform the simulation with APS++ and XPS the signals are saved with the slash notation. Example:option(...

View Article

Image may be NSFW.
Clik here to view.

Error with simulation in IC6.1.7-64b.78 with spectre15.1.0.284.isr1

I have installed IC617 and MMSIM151 in Ubuntu 18.04.4 LTS. Everything gose well until I start simulation and launch ADE L. Once upon I open the ADE window, a warning is thrown out.*WARNING* The...

View Article

Image may be NSFW.
Clik here to view.

Extract Netlist from Layout

I have a complete layout with pads attached to it. I want to extract its netlist. Can some tell me how do i do that?

View Article
Browsing all 4886 articles
Browse latest View live


<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>