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hi all! I'm gonna use monte carlo Analysis to find standard deviation for input Offset of a latched Comparator using icfb 5.10.41_USR5.90.69. the goal is to plot it against a voltage value called Common Mode Voltage. It is to some extent a parametric monte carlo analysis. But it seams this version cant (...)
Hi All, I have a question about the Cadence operation for the MC simulation for the BGR. Normally, we can specify a temperature and run the DC analysis of a BGR to get the historgram of Vref at this temperature. However, are we able to run the MC sim with different profiles at different temperatures at the mean time? For example, this is a measur
Hi guys, After running some monte carlo simulations in a current mirror, I would like to compute the amount of mismatch in percentage. To compute the mismatch in percentage I should do it taking into account the (3 sigma * std. deviation) or just the std. deviation? For example I see people saying that the current mirror has 5% of mismatc
MNA-MAT, a MATLAB based analog circuit simulation tool, uses Modified Nodal Analysis to reduce a SPICE netlist to a system of equations which yield voltage at and current through specific points in the network. monte carlo analysis adds further functionality by evaluating possible uncertainties in real-world working conditions. The tool,
Hello, I am running cadence virtuoso 6.1.5 and trying to sort out the monte carlo analysis for process variation and mismatch. I want to plot the gain vs frequency plot of a single-ended amplifier for 10 runs i.e. I want to see the 10 gain-curves in a graph window. The only option in EVAL TYPE in OUTPUT SETUP of the (...)
I think studying the spice model in analysis process then set parameter in spice program to more practical and proper for purpose . Pspice has monte carlo analysis option , But no 3D graphics result shown .
Hi guys, I would like to make a small experiment regarding current mismatch in a current mirror for different transistors area (or sizes). I know that we have to do that using monte carlo (or maybe the dcmatch can work, I don't know). But the thing is how should I do the calculation to get the mismatch? and should I use any kind of (...)
It looks like you are making MC simulation with a normal lib.scs. You should add the monte-carlo lib.scs file to Model Files. You can add the mc.lib.scs file as a new corner.
Hi everyone, For an LNA design, the inductors used in the design were simulated in a simulation software separate from the spectre simulator used in cadence for the other components (transistors, resistors, capacitors). So we created a n-port file for the inductors in the design and made it point to the S-parameter file generated by the inducto
I have designed too many op amps and none of them have any issue with a wide range variations of supply voltage , temperature , corners of process , worst case pvt circumstances , etc . but the problem is the monte carlo analysis by which my op amps are all totally devastated .I know the monte carlo analysis (...)
Hi! I am trying to model an Arbiter PUF in Hspice. You can google it if you don't know what that is. So I am trying to implement the delay differences in the multiplexers due to process variations. In order to do that I have to run monte carlo simulations using hspice and vary the oxide thickness and the threshold voltage of (...)
Hello, Has anyone used BJT available in TSMC65? There are pnp and npn transistors in the library and can be used. I wonder if any one has simulated monte carlo for those BJT. For MOS, one should replace "_mac" transistor and add "stat_mis" library. How about BJT? there is no "_mac" file to be replaced! (...)
Hi all. I'm trying to solve a problem I was tasked with. Basically I have to generate a 100k 16QAM inputs and transmit them over a AWGN channel. With this I have to use the monte-carlo estimation to figure out the mutual information. I was told to use this estimation: 129044 So I generated the input vector, the
Dear all, I am trying to run the monte carlo analysis of the offset voltage of a comparator. For this, I am using the 'cross' function from Cadence calculator. The expression I use is the following one: cross(VDC("/OUT_SF") 0.9 0 "either" t "time"), where OUT_SF is the output of my comparator and 0.9 is my threshold value. Befo
Hello, Im using Cadence 6.1.3 and Id like to do monte carlo simulation. I found out that "m" shouldnt be used in schematic or monte carlo might be errorous. source: So I decided to test it: testbench results
It will likely work close to your simulation results if you follow proper design procedures such as a good layout, heat sinking, and supply decoupling, but no guarantee. If you can, do some monte carlo simulation multiple runs to see how component variations (including supply voltage variation and offset) affects the amp (...)
Hello all, I am working on an SRAM cell for which I have to perform monte-carlo simulation. During MC simulation in ADEXL window, we found a pop up window with the following error messages after 10 min, while the 6T SRAM cell was run for 100ns for 2 samples. Please help in this matter. [Error message ADEXL-1921: failed to start new job afte
Hello all After many hours searching and reading the tutorials for offset calculation, I don't know what should I do. here is my codes. please help me to complete it.I don't understand how to write codes for DCMATCH or monte carlo simulation and how to extract the information. .options post .op (...)
My file is below. I want to see the effect of aging on circuits with process variation. But I cannot append mosra and consider monte carlo sweep =3 (or any number) at the same time. Could yo please help me. Thanks Also the manual says montecarlo works only with simmode=1 but fopr that I need to first use (...)
Perhaps this tutorial can be helpful: 123718 ... in monte carlo analysis-> in analysis variation why do we have process only, mismatch only and process and mismatch. Can someone pls tell whats the actual difference. See p. 15 of the above tutorial.