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noise analysis- regarding

Charanraj Mohan

Hi, I have done noise analysis previously and have individual contribution of noise of the MOSFETs in my schematic by seeing the noise summary. In the column 'param', I have fn (flicker noise), id (drain-source resistance thermal noise), rs (source parasitic thermal noise), rd- drain parasitic resistance thermal noise). These are contribution of individual type of noises in each MOSFET. I remember that I can see them clearly.

Now, I did the same noise analysis, and I see sum in the column- 'param' which is the sum of the noise. I can not see the different types of noises, like before. Can I know if I am missing some setting in noise analysis?

Thanks in advance.

Parents

  • Have you by any chance used the "hierarchy level" in the filter section of the noise summary form? If you do that, any subckt instances will show the sum for that block (at that level of hierarchy). If you set the hierarchy level back to blank, it will show the individual noise contributors as before.

    Regards,

    Andrew.

Reply

  • Have you by any chance used the "hierarchy level" in the filter section of the noise summary form? If you do that, any subckt instances will show the sum for that block (at that level of hierarchy). If you set the hierarchy level back to blank, it will show the individual noise contributors as before.

    Regards,

    Andrew.

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