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Noise Analysis using Analog Devices Op Amps

asloane
NI Employee (retired)

Hello Circuit Designers,

I found an interesting article on using noise analysis which I would like to share. The article provides step-by-step details using an Analog Devices operational amplifier to demonstrate the benefits of using advanced analyses in your designs.

Noise analysis is a small signal analysis which is carried out at discrete frequencies using a linearized version of the circuit. In essence invisible noise sources are attached to every noise-generating element in the circuit and the analysis is performed against a reference voltage or current.

Noise Plot.jpg

Here is the complete noise analysis tutorial  that demonstrates in detail how to calculate total noise values, power spectral density curves and the model requirements when performing noise analysis.

Let me know if you have any feedback or questions on this or any other Multisim topics.

Campbell B

National Instruments