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 Power Supply model for Oscillator  

Last post Mon, Aug 22 2011 9:22 PM by Quek. 1 replies.
Started by MTP3 18 Aug 2011 07:56 AM. Topic has 1 replies and 1868 views
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  • Thu, Aug 18 2011 7:56 AM

    • MTP3
    • Not Ranked
    • Joined on Tue, Jun 7 2011
    • Posts 15
    • Points 195
    Power Supply model for Oscillator Reply
    Hi! I am trying to simulate a power supply model for an oscillator. I use transient analysis to study the behavior of various parameters.I have an inductor and resistor connected in series to the power supply's positive and negative terminal which is in turn connected to the oscillator. The issue is that when I place the ground terminal(gnd) connected the oscillator vss the oscillator oscillates perfectly fine but when I move the gnd terminal so that it is connected to the power supply's negative terminal the oscillator doesn't oscillate at all. I am just wondering what could be the reasons for this. Since its a ring oscillator the initial conditions are set appropriately or may be it has something to do with how the initial estimates are calculated.
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    • Post Points: 20
  • Mon, Aug 22 2011 9:22 PM

    • Quek
    • Top 10 Contributor
    • Joined on Wed, Oct 14 2009
    • Singapore, 00-SG
    • Posts 1,022
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    Re: Power Supply model for Oscillator Reply

    Hi MTP3

    I think it would be quite hard to guess the cause of the problem. Would you please contact your nearest Cadence support centre and provide a testcase for troubleshooting?

    Best regards
    Quek

    • Post Points: 5
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Started by MTP3 at 18 Aug 2011 07:56 AM. Topic has 1 replies.