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CDF Parameters

  • Transistor Finger/Multiplier does not work

    Hello, There is a Post about this by someone else previously. But it doesn't solve my problem. The same thing happens that I created a nmos/pmos in schematic composer and run a test to see whether multiplier works. When I change the W/L it works well, but when I change multiplier it just doesn't...
    Posted to Custom IC Design (Forum) by EricHsu on Mon, Nov 11 2013
  • CDF Parameter Passing to the Netlist

    Here is my problem: I would like to create the hspiceD (or spectre, doesn't really matter) netlist for a circuit, let us call it depth0. This circuit has a subblock, i0, which is an instance of cell depth1. Inside depth1, there is a resistor and a capacitor. In addition, depth1 has a parameter called...
    Posted to Custom IC Design (Forum) by gintel on Tue, Mar 12 2013
  • cdb2oa (PcellEvalFail)

    Hi Masters, I'm facing issue when dealing with cdb2oa. I can't retain my cdf callback after converting my layout from cdb to oa database;resulted PcellEvailFail message show up... Below is one of the ERROR message. ERROR (CDBOA-603): Cellview <path>/<name> contains <object type>...
    Posted to Custom IC Design (Forum) by Peter123 on Tue, May 22 2012
  • Noise Analysis

    Hi, What does CDF parameters 1. noise file name 2. number of noise/frequency pairs in the properties of source indicates and how does the value for each be given when noise analysis is done.Please quote with an example if my square wave running at a frequency of 450MHz and having a supply voltage of...
    Posted to Custom IC Design (Forum) by Jithin on Wed, Mar 21 2012
  • Netlisting parasitics as sub-circuit

    We are netlisting a device and its parasitics. We don't have the parasitics in the model file. Can we netlist the parasitics as circuit elements by some manipulation of the device cdf. Thanks
    Posted to Custom IC Design (Forum) by analogmatch on Thu, Sep 29 2011
  • Aging simulation with RelXpert and Eldo

    Hello everyone I would like to simulate the aging behavior on circuit-level of the circuits built by bulk-Si CMOS technology. I know that there is a tool named “RelXpert” (combined with UltraSim) in Analog Design Environment (ADE) of Cadence Virtuoso can be used for aging (NBTI and HCI) simulation...
    Posted to Custom IC Design (Forum) by SilentHunter on Sun, May 15 2011
  • how to pass parameters and do some calculations

    Hi, In cell cap the cdf parameter "c" is defined and set as c = [@test:%:12.0]. Cell cap is instantiated in the schemati cell "myTest". In the cell myTest the user property "test" is declared as string ans set to 15. Everything is fine till now, netlist is generated correctly...
    Posted to Custom IC Design (Forum) by Danilo P on Wed, Feb 2 2011
  • *Error* index: argument #1 should be a string (type template = "tS") - nil

    I'm getting this error when i try to use a mimcap in my IBM PDK. all my other components seem to work. *Error* index: argument #1 should be a string (type template = "tS") - nil <<>> (... in tl9lpMimcapCB ...) (... in cdfAppendParamFields ...) (... in unknown ...) funobj@0x136b80b8...
    Posted to Custom IC Design (Forum) by kristen on Tue, Feb 1 2011
  • How to make AMS Netlister evaluate pcells

    Hi, I have built a schematic pcell which instantiates different cells according to a parameter. The AMS Netlister does not generate and include different instances per parameter-set in the netlist. If the generated pcell is placed several times with different parameters in a testbench, the normal spectre...
    Posted to Custom IC Design (Forum) by Marode on Wed, Apr 21 2010
  • Disappearing geometry

    I have a pCell where contacts are repeated as the width increases - pitch = 12 .0 repeats = (wu + 4.0)/12.0 This works as expected for all widths EXCEPT the default, minimum, width in the CDF which is 8.0. When "wu" is 8.0, the contact disappears. If I make the CDF default 7.0 then the contact...
    Posted to Custom IC Design (Forum) by Dean1138 on Thu, Mar 4 2010
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