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Re: adding noise to the model of a sensor


 

--- In LTspice@..., "rug_rossi" <rrossi@...> wrote:

I need to add a noise generator to the model of a sensor
(simply a behavioral source), in order to perform some
noise analysis.

Noise is described by a noise density and a 1/f corner.

which is the best way to do that?
Add to my model a voltage follower made with the
Universal OP amp level 1, or there is a better way?

best regards,

Ruggero Rossi
Hello Ruggero,

The 1/f noise is implemented in diodes. Thus diode noise may be
the natural choice for an 1/f noise source.

Files > Tut > noisegen
Files > Tut > noisegen_with_subcircuits
Files > Tut > new_diode_noise.asc


You already mentioned the "universalopamp". It contains
parameters en and enk to set noise value and corner frequency.

Best regards,
Helmut

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