Spectre calculator functions. The calculator window will appear as shown in Fig.

Spectre calculator functions 778e-06. I think the calculator should have this function, but I checked xval function, it doesn't work for me Let me make my question more specific: for instance, if I sweep variable vinn, the circuit output is called vout, how we can find the vinn for vout = 2V? Hello, I am exploring the special functions in IC 6. Start with choosing the following parameters (to calculate those you can use the spreadsheet Spectre_DFT_calcs. This is most likely to be the erroneous spaces (plus having some unnecessary parentheses may not help). Calculator Users of Virtuoso Visualization and Analysis can perform post-processing calculations using: • Graphical calculator • Equation builder The calculator contains a wide range of built-in mathematic, logarithmic, RF, and special functions and modifiers that can be applied on signals and waveforms to measure various design specifications. On saving, the original script will be overwritten with this information, unless you choose to save the template information at a separate location. Because i don't quite konwn the exact meaning Using the cross function, it generates a number of points, where the lowest and the highest values are the right values that I want. On doing a Noise Analysis and then Print->Noise Summary and then printing the noise integrated in a bandwidth of 50Hz to 8kHz, I got a statement in the Results Display Window which says 'Total input referred noise is 2. I don't know the details of your calculator function so it is hard to give you specific advice. why not the cross function is showing just two values instead of lot of points in the middle of those two points. Assuming you're using IC615 ISR12 or later, you can do this in the calculator using: imag(ypm('sp 1 1))/(2*pi*xval(ypm('sp 1 1))) I got the ypm part by using the Direct Plot Main Form, finding the sp results from sp analysis, and then using the "add to outputs" for the YP section of the direct plot form when I hit Y11. at the current network hashrate. 1, which displays direct result (no need to subtract result again from 180) on ADE Outputs CALCULATOR. Then performed parametric sweep. of Samples—Specifies the samples used for calculating the non-linearity. Isn't it more natural to use Math. Dec 15, 2015 #1 H. /* abA2DBus. Locked Locked Replies 1 Subscribers 118 Views 3806 Members are here 0 I want to use the vfreq function in ADE Explorer calculator to create a curve similar to the one shown in the image below, but I encountered some problems. The input to the DAC can be given by a ADC created using verilog AMS. normalization: 1/sqrt I have another question that would be appreciated if anyone could help me. I have done parametric analysis in 5 frequency steps and then when I went to calculator and filled in all 4 parameters and clicked THD in special functions it simply gave me a scalar value. Staff member. Are there any examples or guidance on how to use these functions for these types of measurements - or is post processing a better The DNL for a DAC which can be simulated through its range using a DC sweep simulation and using a simple formula in Cadence Calculator. (I think transient also may be valid, but not sure, try it). It would be great if I could split real and imaginary parts of complex voltage/current during AC analysis and "feed" it to Verilog A code. Possible values are off, triode, sat, subth, or breakdown. I have another question that would be appreciated if anyone could help me. I have two additional questions: 1. Cancel; Vote Up 0 Vote Down; Cancel; BaaB over 8 years ago. Here is the procedure to do that: Create a test bench with the DAC with all sources with DC values so that the DC simulation can power up. This will open the Calculator, and the name/path of the specified power waveform should appear in the display (see Figure 5). So: cross(VF("/LPFOUT") 750m 1 "either" nil nil nil ) to find the value of the Design Variable for which VF("/LPFOUT") crosses 750mV. 12) onwards. (what I did is using ac analysis and then use the calculator to plot the bandwidth which did not plot any result) Bests Can the stb simulation in Spectre calculate the negative phase margin? zuiying over 3 years ago. The two contours are plotted for fundamental frequency. Thread starter hossein_jalali; Start date Dec 15, 2015; Status Not open for further replies. If the Rounding Selector is set to F the calculator will display 3. Joined Feb 13, 2012 Messages 7 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Persia Visit site Often the simplest way of finding about a particular function in the calculator is to go over the function name in the panel and do Right Mouse->Help. We live in a world where the idea of usability is to To this waveform, I want to apply the cross() to extract the x-axis point at which the function crosses a value. I think the calculator should have this function, but I checked xval function, it doesn't work for me Let want to review the manual for your own handheld scientific calculator. The Math Calculator will evaluate your problem down to a final solution. 6 1 "falling" nil nil )-cross(VT("/Pout") 0. sunjiao3 Member level 5. cross(VT("/Pout") 0. make workaround; to make some sort of Spectre complex number interface for Verilog A. D. . PI if we can access the attribute or function of the class directly and there's a class like Math? I used to def a global variable PI = 2*acos(0), as zmleitao did. 283 Ring Oscillator Spectre Deck for Three-InputNAND Ring with No Fanouts (nand3_ring. Click and hold the Special Functions Button on the calculator. 0529% of the network, you will have 4574% chance of finding a block in a day. 89 calculator functions can operate on single waveforms as well as on parametric plots, multiple-parametric plots, and Monte-Carlo simulations. I am interested in doing INL/DNL of DAC/ADC using Cadence Spectre Calculator as opposed to just doing post-processing in MATLAB. Accurate, rapid online simulation of high-resolution molecular spectra, and other spectroscopy tools for researchers, teachers and students. See also: Alphabetized Functions for Spectre. Calculate Delays, Rise Times and Power Consumption. Step 2: Click the blue arrow to submit and see your result! In order to GPU optimize, the CustomFactor. Is is calculated simply by Vgs, Vth, Vds? Or Is there any other thing done for. The functions delay() and riseTime() can be use to calculate the delay time, and rise and fall times, respectively. Then choose the window type, usually the hanning is good. 8780GHz slew rate calculation Hello everybody, When I tried to use "slewRate" function in waveform calculator of Cadence Analog Design Environment , I found I could get two different SR values for the same ramp of the same curve by using two options seperately, which are either "initial value Y at Stability Analysis in Spectre is there. Waveform Calculator User Guide Overview About the Calculator The calculator has several kinds of buttons. frequency. simulator lang = spectre ahdl_include "/usr/apps/cadence-2006/IC- In function selectGAC (available gain circle). 2% settling time. Thanks. Spectre Circuit Simulator Reference Spectre Circuit Simulator and Accelerated Parallel Simulator User Guide Typographic and Syntax Conventions Special typographical conventions distinguish certain kinds of text in this document. Spectre pseudo functions are not proper functions—they do not result in any run time calculations. e. Hello all, I'm working on the design of an operational amplifier using Virtuoso 6. 0. You should be running AC simulation. For more information about SKILL calculator New: beginning with V0. spectre FactorEngine arranges data by bars, so . about SKILL calculator functions, refer to the OCEAN Reference. Yes, as I said, this will not remove the warning, but it will stop it interpolating which is what the message is primarily alerting you to. However when I sweep a variable using parametric sweep the expression fails to evaluate on the multiple outputs. g. an = function (arbitrarily so, but finite slop). 5. 1) from the simulation ersults using waveform viewer u can select the calculator ( there you will see many functions) 2) else to direct dumping of the value in a file using MDL approach if you are using command line spectre run you can give spectre mdl run to compute that value as below spectremdl -b file1. Then you can apply deriv to the result of this. Spectre provides a nice feature to measure the propagation delay between signals without using the waveform calculator. These functions can be selected using the "Special Functions" menu or can be typed in manually. See the comments at the top for an example usage. I would like to apply a function (like slewRate or peakToPeak) to all of them and take the maximum of the result (which should be a single number per simulation run). pugongying. calc. 47 gets rounded to 146 If I know anything about rounding it seems that the fixture number is rounded correctly. See "spectre -h save" for more details (as I mentioned before). from, to, # samples, fundamental frequency). In IC5141 version, Spectre doesn't provide SNR directly. 6. dividing the power by 2*pi*Fc ? Alphabetized Functions for Spectre. Hello, I am having a problem to extract values from time domain simulation. A very simple way to do so is to define a simple veriloga model that performs the function 1/s. but i cannot get graph to be saved This Spectre Divide sensitivity converter/calculator is a free tool that allows you to convert and transfer sensitivities between Spectre Divide and other games. PlotKf and B1f. We include Unfortunately abs_jitter will only work with a periodic signal, not with a random bit stream. INL & DNL Calculations in Cadence Spectre. wgtkan over 4 years ago. 1. Alternatively, you can break the loop (at a high impedance node) and run an AC analysis to view the PM . It says "Applies a function with a set of arguments to each member of a family". For help on any button or area, click the labels below. Hello, Suppose I have multiple simulation outputs, like /VA, /VB, VC<1> and VC<2>. In general, if the input waveform does not contain regularly spaced time points (and those time points coincide with the sample points for the PSD/FFT) then there will need to be interpolation to re-sample at the points needed for the PSD/FFT. Unfortunately, its seems that Spectre does not support complex number arithmetic. For example, what There are plenty of references on the internet explaining suitable test setups to measure common-mode rejection ratio for opamps. scs Cadence Calculator Function for difference between two voltages. As shown in the following image，I have already input the function in the buffer area, but when I click the “evaluate the buffer，if scalar ,dsiplay in buffer ,if waveform ,plot For this, I am using the 'cross' function from Cadence calculator. The following table provides a list of all functions. They both vary periodically with period T. I can't really advise you, because it's hard for me to see precisely what you're trying to do. 41 July 2004 Hi everyone, I am a newbie in Cadence spectre simulator. If not specified, the samples are taken against the entire data window. 9 0 "either" t "time"), where OUT_SF is the output of my comparator and 0. The example you sent for me helped me a lot. 1) Using the linear stability analysis, 2) using periodic stability analysis. Cancel; Vote Up 0 Vote Down; (but has two value functions around it, so will probably destroy any sweep data Hi All, I am trying to use the bandwidth function in Virtuoso calculator in IC6. calculator function on the loop gain from the stb analysis - so if you send the loop gain to the calculator and then use the phaseMargin function on it, it Send the two waveforms that you want to plot versus each other to the calculator, and then on the waveVsWave form you can pick which you want as the x-axis and which you want as the y-axis. The expression I use is the following one: cross(VDC("/OUT_SF") 0. Natural Language; Math Input; Extended Keyboard Examples Upload Random Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. org 87df80a Hi, I am trying to calculate the time at the intersection point of 2 waveforms in a transient simulation. 3. 4 f 100 ´=´= 2) Find the closest prime number to in,nom FFT s f N f ê ú ê ´ ú ê ú ë û, that is 7. You may also wish to right-click this box and view the waveform, as well. Hi All, I wish to print the yvalue of a waveform generated after noise analysis using ADE-XL at a specific x-value let's say 1Mhz. Points: 2 Helpful Answer Positive Rating Oct 23, 2006 then u can create this equation in spectre , calculator khouly . This document is Both sample () and value () are not functions of Cadence Spectre. the commend as below /> wavescan -expr mdl then the calculation window will be shown. Re: [Moved]:[Cadence Virtuoso ADE Calculator] Difference btw Freq and Frequency Funct Can you understand steady state ? time=0~1nsec fmax=16. Input. There are also situations when the noisy output signal is sampled while it is crossing the From Calculator window: Special Functions > Bandwidth > 3 dB > Select node that you want to calculate BW there. Result. pdf but it does not mean how each electrical circuits and other systems. Also using engine. The formal syntax used in this reference uses the definition operator, ::= , to define the more I do not know of a Calculator function "Accuracy_C". Sorry for the mistake. The procedure to do the same is listed below. ods, the download link is at the bottom of the page) f max: max signal frequency you are interested in (the input signal sampling frequency will then be 2 x f max) f bin: bin size (frequency resolution) For gm and gmoverid, there are functions available in calculator. But, how does the deriv function work? In I vs Vgs, does the deriv function imply the derivative is w. Cadence SPECTRE DFT. It gave me the pulse of the first edge as a function of temperature from 0 to 17 ns vs the temperature range. dnl[k (or maybe k+1)] = (sig[k] - sig[k-1])/ideal_step - 1. Hello, There are a number of ways to determine the frequency of oscillation for an Oscillator. Hi all, I have an STB test on ADE-XL. 479. I developed a trim procedure in Maestro Assembler using the calcVal() function. The setup is as below: Global Variables. Get priority use of advanced, state-of-the-art radiative transfer algorithms--the same ones used by NASA for many remote sensing missions. 0 Important In the remaining discussion, you can assume that the original signal and j(t) are both T-periodic functions. 25 dB). October 2003 9 Product Version 5. The Spectre language has over 200 different functions. Percent is 0. I want the exact two x values where the y value is constant (e. 2. The RA generates 2X gain for a Select the average function from the list of functions in the calculator. 3. Calculate the specified summary over the specified dimensions using the current working set, then average the Determining the frequency of oscillation using the calculator function. However, when I do this, I get "expression evaluation failed" as message. 8. Fourier transform calculator. Each of the calculator functions has a corresponding SKILL command. I had the following setting for the dft function in Cadence Virtuoso Calculator: But it gave me some negative values in the spectrum: So why there are negative values? I suggest experimenting with the dft function on a known signal (like a sinewave) to learn how it works. The calculator has the "bandwidth" option, which I am not sure how to use for calculating the bandwidth of the output signal. Then Click button "deriv" to derivative or "integ" to integrate it. Community Custom IC Design calculator delay function. has any one done this before or any ideas. The pz analysis is computing the poles and zeros of the entire circuit, not just a specific loop gain. Reactions: gladysh. Click the function name for more information, including syntax and examples of usage. 3V (y-axis). If the function Accuracy_C() returns a complex number, you may need Or you can go over the function name in the function panel in the calculator and do Right Mouse->Help which will take you to the help for that particular function. compute function calculates the results of all bars at once, so you need to be careful to prevent Look-Ahead Bias, because the inputs are not just historical data. Hence, I cannot comment on the nature of its expected inputs nor its expected output. However, many quantities in circuit design have to be computed based on a simulation result. This discussion has been locked. But I can't see how to tell the delay function to look at a parameter for the trip point on the input. 541. You need to enter the MDL mode which is activated by waveview status. This makes me not quite comfortable. I hope that helps you, Regards, Ahmad, Jul 5, 2007 #3 S. Plot type choose Z-smith . A menu of functions should appear. 1. Hence, the function, I believe, computes the total harmonic distortion in a manner consistent with the definition (given the FFT length). If you have a question you can start a new discussion It wouldn't be too hard to write such a function - that said, I think it would be a generally useful function to be able to sample a signal at the crossing point of some triggering signal. 10. enter into stact by pressing enter button. For each of the three ways in which the sample points can be specified, only a refactor mass calculator and extract global storage mass function that operates on iterators + use from wallet mass calculator PR #18. benever Member level 5. 9375MHz N ´= and the input bin is fbin = 7. Plot. The functions have The Cadence Calculator is a powerful tool inside Virtuoso that allows you to apply a wide variety of mathematical formulas and functions to signals from your schematic. or you can evaluate buffer by checking evaluate buffer check box. Thats what they say in spectremod. Hello, I have a question about how to get x value for a given point of y in a waveform. then perform any function from calculator. The expression calculates exactly what i want on a single run. Andrew. spectre jitter Hi guys, I need to calculate the peak to peak jitter, Absolute and Cycle to cycle jitter of a VCO output in cadence spectre. (what I did is using ac analysis and then use the calculator to plot the bandwidth which did not plot any result) Bests Re: [Moved]:[Cadence Virtuoso ADE Calculator] Difference btw Freq and Frequency Funct Can you understand steady state ? time=0~1nsec fmax=16. Then click on Tools > Plot. If it were me, I would use your calculator expressions in an ocean script ( which you add as an Assembler Functions. In order to verify this, deriv function is used. isr14. Free functions calculator - explore function domain, range, intercepts, extreme points and asymptotes step-by-step I am applying the "imag" function to the magnitude signal and the result are the same, it shows both have the exact value as you see from the third image (result signal is the one with image fucntion applied) below is the admitance in magnitude here I sent the signal to calculator here is the result after calculator Thank you very much sigma delta psd spectre you can use the 'PSD' function in calculator, set the time you simulated, and the number of samples is your simulated point during the tran time. I also tried to export a plot data to the calculator and do a derivative to it. The cross function looks like this in the calculator (For P=1%): the captab results are only printed in the simulation log (spectre. It's far from clear to me why this would be useful to have as a calculator function. Hi, I am running a transient simulation for x seconds. 21). r. test_lookahead_bias do some tests. Similarly plot GPC (Power gain Circle). Item Query; Gear Search; Advanced Combat Stat Calculator; Pet Stat Calculator; Creature Critical Rating Calculator; Snack Finder; Uncaptured Natural Attacks; This Crimson Spectre Pet was introduced in November 2010, when it was available from the Vendor, Sir Nigel Higgenbottom. We can use the Calculator to calculate the rising and falling delays through the inverter and the rise and fall time of the output signal. It's not in spectreMDL syntax - it's just straight spectre syntax. Spectre RF Simulation option adds several new analyses that support the efficient calculation of the operating po int, transfer function, noise, and distortion of common RF and communication circuits, such as mixers, oscillators, sample holds, and switched-capacitor filters. 0 . I did see in the Calculator screen shot that you used in your post the function was used as an argument to the Calculator real() function. If you mean Calculator Take any output from your AC simulation - e. Joined Oct 5, 2006 Messages 90 Helped 1 Reputation 2 Reaction score You can find the function in the calculator, "special functions". il Author A. Hi Andrew, yes I have but didn't find any expression used by the calculator. I find functions like xval , value in the calculator but not yval , perhaps I am missing the exact name. Define a named expression, or substitute with the specified named expression, defined earlier. You can no longer post new replies to this discussion. The stb analysis computes the loop gain (it does not "break" the loop) - they are different algorithms that work in different ways - so there's not really a way to do this (right now). Subscribe now for full access to the Spectral Calculator tools. But, I want to find out the settling time from -1V to 1V at 0. select other wave. Subscribers gain access to large Cadence virtuoso calculator manual Here you'll find some short tutorials and beginner tips at the Cadence EDA Suite for analog design IC (Virtuoso and Spectre); it's not common as to tutorials on how Cadence Virtuoso works, instead this page is intended as a resource on some specific topics that are sometimes just skimmed in introductory tutorials. 6. g, -4. I have a time domain simulation from 0s to 32us (x-axis) and 0V to 3. Andrew Beckett over 4 years ago Discover useful keyboard features in Windows that make navigation, tasks, and functions quicker and easier. -If I uncheck "timed" under the label "Misc", the table is available through "Results->Print->Capacitance Table", but the captab is run only at the final transient operating point. LoadCurrent -> 1u 1m 10m 100m. To me, as PM is a value, it I don't understand your question. Mining solo with 100 Kh/s The SPR network have an estimate of 86400 blocks per day, and a network hashrate of 188. (I used a netlist which you can run with spectre command line in order to make the testcase simple): // vin (vg 0) vsource dc=1 vout (out 0) bsource v=sin(v(vg)) dc dc dev=vin param=dc start=0 Explicit rational function solutions for the power spectral density of stochastic linear time-invariant systems - martiniani-lab/spectre martiniani-lab/spectre. The proposed calculation method, relying on linear-time variant simulations, is at least an order of magnitude more efficient than a conventional direct I found the thd() in calculator only has 5 arguments (e. Per the manual (Virtuoso Visualization and Analysis XL User Guide, Calculator Functions, Special Functions, dnl), the calculation is pretty much what you have said. Part of the trick in using this function is how to specify the time points. 55) What's the reason for the last term: dB20(twoPi*f0_pss), i. swept quantity? (deriv(i("/M0/D" ?result "dc")) Is this ID's derivative with respect to V_GS Dear Shawnlogan Thank you very much for your answer I want to use INL function in the first post I copied wrong expesion DNL instead of INL function from calculator Of course, I also use DNL function after that. The Eye Diagram assistant (in IC615 onwards) gives the option of computing various metrics such as the standard deviation of the edge, but if you need more general calculations, you can use the SKILL code in solution 11395772. In function chooseLSB (Load Andrew, Thank you for replay. Probably worth contacting customer support to suggest this as an enhancement. At the END of the stimulus file [refer Tutorial-I or Tutorial-II] add the following lines. t. Joined Feb 15 OCEAN Reference June 2004 5 Product Version 5. Make sure you read that part carefully. " means - average doesn't take a second positional argument. [/b] Hello, I have a question about how to get x value for a given point of y in a waveform. Language SKILL Date Jun 20, 2018 Modified May 13 Hi there, Ive been a bit wondering about calculator function of "operation region". It didnt work either. example; Allegro: round(145. The converter supports many game conversions and provides an effortless way to maintain consistent sensitivity throughout the games you play. In essence, ADE XL tries to evaluate global variables as SKILL expressions first (ADE Assembler does the same), and if that fails to evaluate, it assumes the expression can be handled by the simulator - and that's why it fails in the simulator (since that Pseudo Functions. It seems that defMathConstants() create an instance of a class, and the PI is a function of the created instance. 281 Ring Oscillator Spectre Deck for Two-Input NAND Ring with No Fanouts (nand2_ring. P. This cross function now gives the time point when the signal enters the P% range and settles. 47) - result 145 Fixture: 145. 8780GHz Stability Analysis in Spectre is there. Sweep gain level (dB) at frequency = fundamental freq from xdB to ydB (say 14 to 18dB) with steps in dB (say 0. Before running the Monte Carlo analysis, I do a simple dc simulation with Spectre. Joined Sep 9, 2008 Messages 8,108 Helped 2,695 Reputation 5,370 Reaction score 2,308 Trophy points 1,393 The Spectre simulator's OCEAN 1) Calculate in,nom 6 FFT s f 10 N26. I use the settling time function in the calculator. You are also using a rectangular window (i. slew rate calculation Hello everybody, When I tried to use "slewRate" function in waveform calculator of Cadence Analog Design Environment , I found I could get two different SR values for the same ramp of the same curve by using two options seperately, which are either "initial value Y at Simulations in Cadence yield very useful results. “ Cadence Spectre Calculator ”, such Tool does not exist. In the Waveform Window, select the third to last icon that looks like a calculator, labeled "Calculator". It's also covered in the spectre documentation in cdsdoc/cdnshelp (depending on the version of MMSIM you're using). Open the Calculator with ADE->Tools->Calculator. Stats. Click on average. org 87df80a ADE-XL retrieve values and calculate min. Explicit rational function solutions for the power spectral density of stochastic linear time-invariant systems - martiniani-lab/spectre martiniani-lab/spectre. you can find one commend "SNR" in the function window. spectre calculator xval Is there a way to do it within the calculator ? I to find the value of gm when the Helped 69 Reputation 138 Reaction score 16 Trophy points 1,298 Visit site Activity points 3,993 cadence calculator cross function You can plot x*0. For hierarchy, you need to use netlist names, and spectre's hierarchy delimiter. Now setup a cross function for abs(FIN-WAVE1) to cross the threshold of abs(FIN-INI)*P/100 and measure the last edge (-1 edge number) and the edge can be "either" (instead of rising or falling). On average, you will find 46 blocks every day. Jitter Measurements Using SpectreRF Application Note Measuring Jitter March 2006 7 Product Version MMSIM6. Locked Locked Replies 5 Subscribers 118 Views 26598 Members are here 0 This discussion has been locked. I would like to find the maximum difference between the applied input voltage and obtained output voltage over the duration of the x second transient simulation. org and testnet-dnsseed-2. In these two cases, a stability probe has to be used. then press plot it will plot the desired result in waveform window. 41 4 Working with SKILL Applying calculator function to multiple signals at once. RobinCommander over 10 years ago. 89 MH/s. Instead, these functions substitute expressions or parts of expressions into other expressions. But the answer gives me ERROR. I only used a basic SP analysis. Note that the function only appears in the functions panel from IC616 ISR12 (6. Feb 28, 2007 #3 B. SteveVrk over 3 years ago. 05 for x-axis (instead of Anyway, rather than me writing an abSetName() function - actually it would be tricky to register this with the calculator because presumably you'd want freeform entry for the axis name rather than a cyclic field of predefined units, and if I Virtuoso Video Diary: Do More With eyeHeightAtXY and eyeWidthAtXY Calculator Functions in Virtuoso Visualization and Analysis XL. Go to the next page, set the window size ,other blank left default. Hi All, I have been running a hb simulation with two input tones and observing power in the various generated products. Regards, Andrew. Are there any examples or guidance on how to use these functions for these types of measurements - or is post processing a better To use it, use the "fx" button in the calculator function panel and navigate to the file - it will add the calculator UI too which works just like analog2Digital. netbug over 5 years ago. spectre-network. Products Spectre outputs number (0-4) in a rawfile. I would like to ask you please what is the difference between the dft function from the calculator and the Spectrum tool provided by ADE, I want to simulate the THD and the SNR of my amplifier, which one is better to use, Some people claimed that Spectrum tool is not that accurate, I would say it is up to their setting, what is the best setting Abstract: This brief describes a simple method to compute the impulse sensitivity function (ISF) of oscillators by means of the periodic transfer function analysis that is available in most of the commercial circuit simulators. Method: use cross/intercept/delay commands of the calculator Problem(s): 1) I thought I could use delay to select the difference between input crossing a voltage & the output crossing midscale. This DFT, or Discrete Fourier Transform, using Cadence Spectre using the provided spreadsheet to easily calculate the DFT parameters Alphabetized Functions for Spectre. Joined Jun 28, 2005 I am doing a simple DC sweep & using the cross function in the calculator, i am finding the x-axis in my sweep range for a particular y-axis value. Can you explain this in a bit more detail? What do you mean, how do you use the x point value as a point? I don't know what your "i. may you check to see i understoor the concept of Sampling signal and threshod Sampling signal:It is the calculator cadence i need to find the rise time in cadence spectre. I created a simple inverter and used xmin and xmax of the output signal. sp) . VF("/out") - the vf button on the calculator can generate this from some node in your circuit - and then use the calculator xval function. The PSD calculation expression is therefore: db10(psd(VT("/M") function suggests you are using a start time of 1 s, a stop time of 993 seconds and requesting that the analysis be performed using 198400 time points with a window size of 12400. 6 1 "rising" nil nil ) in the calculator for my first edge and send it to the ADEL output. Normal distribution probability density function is the Gauss function: where μ — mean, σ — standard deviation, σ ² — variance, Median and mode of Normal distribution equal to mean μ. 7. This will generate a waveform with the x-axis values as the y-axis - and so it will give you a waveform of frequency versus frequency. You can also add, subtraction, multiply, and divide and complete any arithmetic you need. mdl -d file2. Beckett Group Custom IC (UK), Cadence Design Systems Ltd. For example, I spectre -W => Tool 'cadenceMMSIM' Current project version '16. Hi, I have an expression setup in ADE-L using the sample function in the calculator. syafiq over 8 years ago. For example, the function will accept a transient waveform and calculate a moving average in a window twindow. This will print the average value in the white box in the calculator: Probability density function. sp) 284 By clicking on the Edit UI button on the Add Custom Calculator Functions form, you can edit the prompt names, data types, default values and tooltips. Mar 2, 2007 #5 C. With a hashrate of 100 Kh/s, which equals to 0. Community Guidelines The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. 17 Dec 2021 • 3 minute read. Once again they are precomputed calculations. Kindly advise. Do I have to ensure that the input signal to the bandwidth function is in a particular format like non db20 or only a magnitude function ? You then need to register the function in the calculator (Andrew includes this in the instructions in the comments header of the file) in the CIW: abRegMovingAvgSpecialFunction() Once the calculator is open, you can now utilize the function by providing a waveform followed by the period over which to compute the moving average. (recursive, element-wise, matrix inverse and simulation) to calculate the power spectral density of stochastic dynamical models exhibiting fixed point solutions. Thanks in advance. fanoplane over 8 years ago. Assume a trim range from 0 to 15. Re: calculator in canence??? first click on wave button in calculator then select wave in the waveform. This Spectre Divide sensitivity converter/calculator is a free tool that allows you to convert and transfer sensitivities between Spectre Divide and other games. When I use xmin and xmax of the output. It is used after you run an AC analysis. We include This function includes the following arguments: No. 9 is my threshold value. If you have a question you can start a new discussion functions in spectre assert expression. I have been using the calculator in wavescan to find itnow i have to test the circuit under different vdd conditions for which the expression for risetime also changesis there any way by which i can use a variable as an argument in calculator so that i dont have to painstakingly change the Lastly, in the calculator, choose menu "Edit / Paste". . Commented Mar 22, 2021 at 18:30 refactor mass calculator and extract global storage mass function that operates on iterators + use from wallet mass calculator PR #18. Thank you. The calculator below gives probability density function value and cumulative distribution function value for the given x Rather than using matlab to do the calculation, you could probably just use the spectrum function in IC61 (it's documented, and in the calculator, and available in OCEAN) to do this directly. Most calculator functions don't deal with lists, so we can use the SKILL length() function to measure the number of entries in the list. For example, I'm doing a FFT with sample frequency of 8192KHz. The cross function requires a threshold but in this case the threshold value (from the other waveform) is a variable. So the 1st and 2nd row in settling time function is: y, value is -1V . In this example, the output of a residue amplifier needs to be analyzed. Added official testnet DNS seeders testnet-dnsseed-1. I saw examples of famMap usage like you described. hossein_jalali Newbie level 4. 05 and other graphcs on a same window and select a x*0. I have a 2 ports network and I try to plot the input equivalent capacitance vs. In ADS I use equation: Cin = imag(Y11)/2/pi/freq. \$\endgroup\$ – Bimpelrekkie. Based on my understanding, pv is a ocean function, OP is a calculator function. I don't think it can be used to draw the integrated waveform. I integration in cadence calculator I think that this function just "calculates" the value of the definite integral of the given signal on the specified interval. Hi Andrew Following the above post, I have a similar inquiry wherein I have a CMOS OTA and I have to plot its THD in Cadence Spectre. Menus Mode buttons Special Functions menu Take any output from your AC simulation - e. Virtuoso Spectre Circuit Simulator User Guide Product Version 5. Community Custom IC Design Calculator - Special Functions (xmin & xmax) Stats. In the configuration you have there, the common mode is entirely defined by the DC This tutorial demonstrates how to use Calculator in ADEL. 3) Then the actual input frequency is s FFT 7 f 10. JustinTaylor86 over 12 years ago. Save the current through the voltage source, and then multiply the current by the voltage - and maybe take the RMS of that using the rms function in the calculator? Cancel Vote Up 0 Vote Down Community Custom IC Design functions in spectre assert expression. 93700787401575 If the rounding selector is set to 5/4 it will only display 2 decimal places, so it looks at the digit in the third decimal place (the thousandths place) and if that number is 5 Some Via testpoints are not on a 1 mil grid, and the round function in allegro seems to work differently than our manufacturer's fixture software round function. Dec 19, 2012 #3 erikl Super Moderator. Mar 8, 2008 But I got on my own on how to use 'phaseMargin' function in Cadence ADE Calculator version 5. The calculator window will appear as shown in Fig. The difference between ocean function and calculator function is: For ocean function, you need to selectResult() first, for example, to use pv, you need: selectResult('dcOp) pv() For calculator function, you do not need to selectResult(), you can run I am interested in doing INL/DNL of DAC/ADC using Cadence Spectre Calculator as opposed to just doing post-processing in MATLAB. If I have a moment, I'll see if I have time to write a function to do this The cross function can return a list of crossings if 0 is given as the edge number. These functions can be used in all Spectre file types. Cancel; Vote Up 0 Vote Down; Cancel; Pyroblast over 8 years ago. I have no experience using the INL or DNL functions in the Cadence Spectre Calculator. Use correct terminology. out) but the "Results->Print->Capacitance Table" option is grayed-out. Cancel; oyayla over 4 years ago. In this document: Virtuoso Spectre Transient Noise Analysis The PN() function is used to calculate the phase noise after transient simulation with this equation: (p. 479' sub-version 16. And click toolbox icon "Graph X" to plot the derived signal. In particular I am interested in a product that is at 6*f_RF-7*f_LO (the system is low-side LO and the product does They're not really the same thing. 2. isr9. Explore math with our beautiful, free online graphing calculator. Difference in output of calculator 'pvi' function between ADE XL and ADE L. For a start, calculator functions produce a scalar, waveform or family of waveforms from (mostly) existing waveforms and Calculator -> Using 'value' in equation. Doing this man Using the cross function, it generates a number of points, where the lowest and the highest values are the right values that I want. 500. I am able to setup a calculator variable and sweep the edge number and plot graph of the crossover points vs edge number. When I was simulating a two-stage op amp, I tried to use stb to simulate its stability. You probably first need to convert that bus of analog voltages into a bus - which you can do via the Measurements->Analog to Digital in ViVA (you can choose whether signed or unsigned, and the radix) and then having plotted that, you can take the resulting bus and do Right Mouse->Send to Calculator or Send to ADE to add into your output Ring Oscillator Spectre Deck for Inverter Ring with No Fanouts (inverter_ring. » function to transform: » initial variable: » transform variable: Compute. I am using IC6. 1, which displays direct result (no need to subtract result again from 180) on ADE Outputs Simulations in Cadence yield very useful results. CDRCDR Member level 4. Then the 3rd and 4th row in settling time function is: y, value is 1V . Click the function name for more information, Spectre expressions support the following standard math functions. ; spectre's normally using float32 data type for GPU performance. We will calculate rise time first. Hope this will solve your problem. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more. I get the following error: The methodology to measure power using Cadence Spectre is described in this Select the function “INTEG” from the built-in functions. But I don't know how to insert that equation into Cadence. , none). But, this commend can't be directly used so u need to create a math equation. I Spectre 19. I checked manual for function famMap. htnomw fcuqo vxssiu ufo nvix wcoezfj lcjc edt qfa uxwdg