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Analog Artist

  • How to Handle a floating output?

    Hi, what is a common practice in IC design, when, for example, a Q output od a D flip-flop is not used. Is it left floating, pulled up/down with a resistor or any other load? Kind Regards, pitter.
    Posted to Custom IC Design (Forum) by pitter on Sun, Nov 15 2009
  • VerilogA Problem in MMSIM-7.1

    Hi, I am having a problem to simulate my verilogA files under MMSIM 7.1. They work fine under MMSIM-6.0. In spectreout, I get: ERROR (VACOMP-1008): Cannot compile ahdlcmi module library. Check the log file input.ahdlSimDB/3821_soi12so_Test_Tapeout_Sept09_BinarySearch_veriloga_veriloga.va.BinSearch.ahdlcmi...
    Posted to Custom IC Design (Forum) by gokce on Wed, Jun 3 2009
  • Input power of a subcircuit

    Hi, I'm simulating with an envlp + pss simulation a rectifier and I would like to estimate the power that goes in input to a subcircuit that implements it. The input voltage of the subcircuit is constant and the current is given by a constant plus an alternating contribution. I tried the following...
    Posted to Custom IC Design (Forum) by Ueue on Mon, Apr 6 2009
  • AEL expression in CDF

    Hi, I'm trying to modify a resistor value in its CDF via an conditional expression as below (iPar("b1")==1) ? iPar("p3") : iPar("p4") where b1, p3 and p4 are previously defined in the CDF. The AEL reference document lists "?:" as a valid operator. But it doesn't...
    Posted to Custom IC Design (Forum) by hkutuk on Thu, Jan 22 2009
  • Process Corners set up problem

    Basically I know how to set up a process corners for multiple model library, however some fab provide model files which include several different device sections in one file. For example, there is a model file "mos.scs" which include sections like "tt", "ss", "ff"...
    Posted to Custom IC Design (Forum) by Marke on Thu, Nov 27 2008
  • Re: How to plot device parameters from transient sims.

    Hi haiko, Thank you for your response. Unfortunately it does not answer my question. Let me try to be more specific: I already know how to open results, view and plot voltages and currents in ocean and analog artist. I want to plot the small signal parameters of the BSIM4 model of some transistors during...
    Posted to Custom IC Design (Forum) by Eric Gamble on Thu, Oct 23 2008
  • How to plot device parameters from transient sims.

    Hello, I would like to plot gm, gds, cgs, cgd, etc. as a function of time in my spectre transient sims using analog artist. How do I do this? Thanks, Eric.
    Posted to Custom IC Design (Forum) by Eric Gamble on Tue, Oct 21 2008
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