Cadence Calculator Use Variable

September 02, 2021 Post a Comment

In addition starting another Cadence session. How to Use the Running Pace Calculator.

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Its a scripting language that works behind ADE.

Cadence calculator use variable. AC magnitude is used for AC simulation Amplitude and Frequency are used in transient simulation. VT stands for Transient voltage so this trick will work here VDC will be better but it wont work for any design variable for example you have set a variable for rise time frequency capacitance transistor width etc. Setting Calculator GUI Using cdsenv Variables.

The advICoOceanTools are structured in a way that you can start the simulations in one Cadence session and finish the setup of the analysis while the simulator is running. Add the design variables for the vpulse source with Variables-Edit. Corners temperatures and design variables it also provides a framework to calculate parameters and to do plots.

Do the same for b c Wid Len. Alternatively you can also use the desVar OCEAN function but you may need to combine this with other functions to convert the string value into a number eg. For the capacitance value use a variable named C.

Calculate it as follows. The DC gain from this graph can be approximated by using the first point which has a frequency of 1Hz. I think that this is what you want.

Cadence Gear 30 40 50 60 70 80 90 100 110 120 130 Cadence Gear. The easiest way to do this is have Cadence grab them from the schematic by going to Variables - Copy From Cellview which should cause vbias to appear in the lower left window. Vlogic_high - Set to the logic high level of the bus.

The VAR will pick up the value used in the simulation itself. Enter your average cadence in the first box. 260 Working with Expressions.

The input of the ADC is connected to a voltage source whose DC voltage is set to a variable like vin The parameters of the ADC should be set as follows. You can write calculator functions such as. Here we used variables Vtran and freq_tran rather than fixed values.

We will now show how to access this point from the calculator. Using Design Variables This part of the tutorial will show you how to parameterize the width of the NMOS and PMOS transistors of an inverter by using design variables. Reopen the calculator window and type Gain into the display window.

Vlogic_low - Set to the logic low level of the bus. Of course I didnt define it it is the independent variable in the simulation. You will still need to define the variable using desVar and then vary it using paramAnalysis.

All variables should now appear in the Design Variables list. The variable a should now appear in the Design Variables list. As you can typically have a lot of variables and dont accidentally want to miss adding any of them click on the Copy From button.

Fortunatly the calculator allows us to use previously defined variables in the calculator. Now we can finally simulate. Cadence needs all variables initialized to some value even if it is a sweep variable and will change so double-click vbias enter 0 for its value click Change then OK to exit.

Use design variables in cadence calculator. Let the tool work with voltages currents and the built-in calculator functions. Exact values can be used to calculate the yield for the process.

Yes you should be able to use the VAR function for example VARt_variable-name t_dataDir. One thing I always use to bypass the Cadence calculator is use Ocean to simulate my designs. Your Average Running Pace will be Displayed in minutes per mile in decimal format.

Put another way the desVar defines the variable before the simulation is run and the VAR function refers to the value from the simulation itself. Now click on a variable and change its value. Cadence calculator frequency variable I am trying to plot the expression in cadence.

T1 cross vPAD pvdd2 3 rising t2 cross vOUT 02 3 rising delay t2-t1 fprintf of gn delay. Vref - This is the most important parameter for correct simulation. Add a transient simulation.

This carries over all the variables in the schematic to your ADE window. Dont use variable names. Select Variables - Edit.

Make a copy of the inverter cell schematic you have previously designed or create a new. Enter your average stride length in the second box. Go to Variables - Edit and then in the dialogue box enter a as Name and 2 as value.

It gives long expressions but produces the result you need. Next find the absolute. Choose a stop time of 6u which will give plenty of time for any start up behaviour to die out so.

However in a real manufacturing process process variables are subject to a manufacturing tolerancethey. These variable values are then set using the Analog Design Environment prior to simulation. -12pifreqimag1YPPORT0 PORT1 The error keeps stating that freq is an unbound variable or in other words undefined.

Set trise 1n and tperiod 1u. For this click on the variable. Press Enter Tab or the Done button.

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