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Design >> RF Design >> Error Message in Charge Pump Noise Simulation
https://designers-guide.org/forum/YaBB.pl?num=1157473760

Message started by timmc6 on Sep 5^th, 2006, 9:29am

Title: Error Message in Charge Pump Noise Simulation
Post by timmc6 on Sep 5^th, 2006, 9:29am

When simulating the phase noise of my charge pump using PSS/PNOISE, I am seeing an error message saying "Relative residual of linear system is significantly above tolerance. Results may be inaccurate." The message occurs for frequency steps between 100Hz and 500Hz, then does not appear for the higher frequency steps. Has anyone seen this error message before? Thanks.

Tim

Title: Re: Error Message in Charge Pump Noise Simulation
Post by Ken Kundert on Sep 5^th, 2006, 11:10am

This is one you probably want to show Cadence.

-Ken