- Spectre calculator functions For a start, OCEAN Reference June 2004 5 Product Version 5. cdsinit or . Go to the next page, set the window size ,other blank left default. SteveVrk over 3 years ago. For example, I have a waveform called Using the cross function, it generates a number of points, where the lowest and the highest values are the right values that I want. I always used cross(), but I'm trying about SKILL calculator functions, refer to the OCEAN Reference. I am trying to use the bandwidth function in Virtuoso calculator in IC6. supermos over 13 years ago. I want the exact two x values where the y value is constant (e. dividing the power by 2*pi*Fc ? I'm confused how the PN() function implements the calculation of phase noise as defined in the same document: (p. 41 4 Working with SKILL 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. Because i don't quite konwn the exact meaning The PN() function is used to calculate the phase noise after transient simulation with this equation: (p. Thanks. Hi, I am running a transient simulation for x seconds. Hello, I have a question about how to get x value for a given point of y in a waveform. Regards, Why users love our Functions Calculator. Waveform Calculator User Guide Overview About the Calculator The calculator has several kinds of buttons. JustinTaylor86 over 13 years ago. may you check to see i understoor the concept of Sampling signal and threshod Sampling signal:It is the sampling spectre thd Hi all, I want to simulate the THD using spectre, I've done the Transient analysis and want to use Calculator -> Special functions -> thd; there're four parameters must fill in, (the first two must start and stop frequency I think, Number of Samples and Fundamental) What's the The cross function can return a list of crossings if 0 is given as the edge number. It didnt work either. Functions. Hello, I am having a problem to extract values from time domain simulation. 1. Expression Builder . The standard stability analysis is going to look at the stability assuming a static (not time varying operating point) and usually (unless the oscillator is very linear) will not give the correct frequency. wpchan05 Full Member level 4. This document is sample () is different from value (). e. For more information about SKILL calculator New: beginning with V0. 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. Locked Locked Replies 1 Subscribers 118 Views 3806 Members are here 0 This discussion has been locked. If it's a dc sweep, then you should use IS () rather than IDC (), 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. 5us and periodically every 1us. Spectre provides a nice feature to measure the propagation delay between signals without using the waveform calculator. Andrew Cancel Calculator -> Using 'value' in equation. 479. Products Solutions Support Company Products Solutions Support Company Community Custom IC Design Applying calculator function to multiple signals at onc Applying calculator function to multiple signals at once. Locked Locked Replies 2 Subscribers 118 Views 16161 Could you please explain a little more how coz there is no SNDR function in the spectreRF calculator. il". 6 based on 20924 reviews functions-calculator. en. I want to extract value (voltages) start at 0. 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 measurements. 9 is my threshold value. 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. A very simple way to do so is to define a simple veriloga model that performs the function 1/s. October 2003 9 Product Version 5. This makes me not quite comfortable. The following table provides a list of all functions. This opens the Add Custom Calculator Function form, just add the path to the file you've downloaded and click OK. Related Symbolab blog posts. I think the calculator should have this function, but I checked xval function Alphabetized Functions for Spectre. You can no longer post new replies to this discussion. So far I have VT("/vout")-VT("/vin") obviously. mdl -d file2. Most calculator functions don't deal with lists, so we can use the SKILL length() function to measure the Each of the calculator functions has a corresponding SKILL command. For more information about SKILL calculator functions, refer to the OCEAN Reference. The Spectre language has over 200 different functions. The procedure to do the same is listed below. 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 expression for risetime From the webpage, first download the function you want to use and then open the Calculator or Expression Builder and click the respective Add Custom Function button, as shown in the figures below. Joined Feb 13, 2012 Messages 7 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Persia Visit site Activity points 1,334 Hi guys; I've recently simulated a SAR 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. isr9. 🌐 Languages: EN, ES, PT & more: 🏆 Practice: Improve your math skills: 😍 Step by step: In depth solution steps: ⭐️ Rating: 4. Thread starter hossein_jalali; Start date Dec 15, 2015; Status Not open for further replies. Click the function name for more information, want to review the manual for your own handheld scientific calculator. syafiq over 8 years ago. 89 calculator functions can operate on single waveforms as well as on parametric plots, multiple-parametric plots, and Monte-Carlo simulations. For every input 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 use this way of registering the function it wouldn't surround the typed in name with quotation marks The following can give you more information about the Spectre circuit simulator and related products: To learn more about the equations used in the Spectre circuit simulator, consult the Spectre Circuit Simulator Device Model Equations manual. scs For this, I am using the 'cross' function from Cadence calculator. The functions are covered in an appendix (Appendix B in the IC616 manual) of the ViVA XL User Guide - note that the first section of the appendix covers the "MDL" mode functions rather than SKILL mode, so skip to the bit where it starts "Spectre RF Functions", plus the "Special Functions" etc - the rest of the chapter. Each of the calculator functions has a corresponding SKILL command. It seems that defMathConstants() create an instance of a class, and the PI is a function of the created instance. 21). spectre -W => Tool 'cadenceMMSIM' Current project version '16. The functions have The following can give you more information about the Spectre circuit simulator and related products: To learn more about the equations used in the Spectre circuit simulator, consult the If you are trying to find a value from a DC analysis, perhaps you can use the value () function to interpolate between two values. Cancel; Vote Up 0 Vote Down; Cancel; Your post is a bit confusing - you show one expression which is using IS (but has two value functions around it, so will probably destroy any sweep data and hence give you a single value at a particular corner and Vgs 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. Hello, Suppose I have multiple simulation outputs, CALCULATOR. Andrew. swdesigner over 12 years ago. 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 Community Custom IC Design calculator delay function. i need to find the rise time in cadence spectre. 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. g, -4. I would like to add these functions to the function panel in the calculator. Stats. il" and "bbb. hossein_jalali Newbie level 4. As an alternative, ViVA offers the Spectrum Assistant which is accessible from ViVA's menu as Window->Assistants->Spectrum. 3V (y-axis). 479' sub-version 16. simulator lang = spectre ahdl_include "/usr/apps/cadence-2006/IC-. Joined Feb 16, 2006 Messages 213 Helped 20 Reputation 40 Reaction score 4 Trophy points 1,298 Visit site Activity points 2,392 spectre sndr The spectrum function allows you to compute SNDR (it is called Will a calculator function called frequency, computes the frequency of oscillation from the transient response? Thanks a lot. 6. Thank you. It works when I load into CIW but when added as custom function to calculator, it doesn't get session number: It's far from clear to me why this would be useful to have as a calculator function. why not the cross function is showing just two values instead of lot of points in the middle of those two points. 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. 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. 55) What's the reason for the last term: dB20(twoPi*f0_pss), i. I am using IC6. The example you sent for me helped me a lot. I have a time domain simulation from 0s to 32us (x-axis) and 0V to 3. The Spectre circuit simulator is often run within the Cadence ® analog circuit design How to use spectre calculator to return x value of a given y? Thanks. Regards, Andrew. If you have a question you can start a new discussion Calculator - Special Functions (xmin & xmax) DineshBabu over 11 years I have some user-defined calculator functions Ex. December 2005 11 Product Community Custom IC Design Calculator - Special Functions (xmin & xmax) Stats. value () calculate only one point. sample () resamples data with fixed step regarding The cross function can return a list of crossings if 0 is given as the edge number. A function basically relates an input to an output, there’s an input, a relationship and an output. 53) INL & DNL Calculations in Cadence Spectre. 8. I'm able to do it by using the fx button but I would like to know if there is a way to automatic define it in the "Skill User Defined Functions" (Function Panel) by using . Before running the Monte Carlo analysis, I do a simple dc simulation with Spectre. 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 É[DT³z !ÃÜÿ›¯ú¥s¼Øß*I!½ ü‹?[rm'iݱ í¤?çi â’B ,êó õÌn5ëÅüŸ©iÑœ¤NEéØÙ Ë j¿>v~W9þ?3Åî E, Q„ ƒ ( âýù3»X,qw )ù A¥DR‰G;㎠95 y 1T @˱²;¹;¹³ªTÙê •*UÖ^ íÿý¡·VED ë]ч¨ÚlivÚ½Äz ¡ öl2 ']ŽÏ6®“£W=n1AeŠ|Cå8* ‰/JçÓUIgN'Ð lÄ~1Ñm çz[ n{¿Ã@ÙW“e s6¤ðm ß [ A»nP üšqT5ÎÐ º±´ ·' °FH V«g +KÁ††O=¢2å f·í/€ßñlΣu’ñyÒ„%–Q e GœQ,ôk?Ìw êäð9¿Ù 5:ã ™ q GY™DQ Cadence Calculator Function for difference between two voltages. Then choose the window type, usually the hanning is good. Locked Locked Replies 5 Subscribers 118 Views 26598 Members are here 0 This discussion has been locked. "aaa. Is there a I also tried to export a plot data to the calculator and do a derivative to it. The expression I use is the following one: cross(VDC("/OUT_SF") 0. Mar 4, 2009 #5 W. [/b] The ViVA Calculator (which you showed in your screenshot of your first Forum post entry) provide access to the dft() function as well as to the psd() function. Calculator. 9 0 "either" t "time"), where OUT_SF is the output of my comparator and 0. Products Solutions Support Company Products Solutions Support Company Community Custom IC Design Moving average function for Calculator. If you have a question you can start a new discussion calculator delay function. This is my initial trial. Cancel; Andrew Beckett over 4 years ago. Both functions invoke an interpolation from PSF data. 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. 0. Cancel; oyayla over 4 years ago. . Isn't it more natural to use Math. At the END of the stimulus file [refer Tutorial-I or Tutorial-II] add the following lines. SpectralCalc provides tools for remote sensing research and education, featuring an interactive gas spectrum simulator. cdsenv. Dec 15, 2015 #1 H. 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 ? When I am applying the bandwidth function to a db20 format wave then the 3db results from the calculator don't match with the visual results for me. For help on any button or area, click the labels below. 0 . Menus Mode buttons Special Functions menu Commands for plotting and printing Commands for entering 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. Hello, I have a question about how to get x value for a given point of y in a waveform. Scientists and teachers from all over the world use this to calculate high-resolution spectra of gases or planetary atmospheres in laboratory settings. 10. I don't think it can be used to draw the integrated waveform. You can use periodic I would like to apply a function (like slewRate or peakToPeak ) to all of. wcfe iylruw uynfsq niabgiqk rwg zwrx ryc oowh trrrann dugf