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Preamplifier noise specifications (Read 2892 times)

nishanth

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guwahati

Preamplifier noise specifications
Jul 19^th, 2011, 11:31pm

Hai,
I want to calculate the following two quantities for my preamplifier with cadence tool. Can anybody give me the procedure?
1. Total input referred noise voltage Power Spectral Density @1Hz & @100Hz.
2. Total input referred r.m.s noise voltage (1 Hz - 100 Hz)
Suggest me acceptable range of the above two quantities for low noise low power applications

Thanks in advance,
Nishanth P.V

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ywguo

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Posts: 943
Shanghai, PRC

Re: Preamplifier noise specifications
Reply #1 - Aug 13^th, 2011, 6:45pm

If you had run noise analysis in ADE, the input referred noise power spectral density is there.

Then integrate the power spectral density from 1 Hz to 100 Hz, you get the total input referred r.m.s noise voltage (1 Hz - 100 Hz)

At last, I don't know what is acceptable range. You should ask your customer if you have, otherwise ask who is in charge of the project.

Yawei

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