Microphones with OpAmp and de-emphasis feedback network

[Itsme]

I would need something that looks like this:



That way we would get a more realistic behavior over frequency. Even some crude estimations about robustness against RFI would be possible..

 

[Itsme]

You might wanna consider using "AC 1" for AC analyses - that way, the graph will be referenced to 1V = 0dB.

Thanks for the suggestion. I will use it for specific adjustments for sure. While working on concepts, I prefer to have the actual levels of the internal nodes. I also usually switch to a log scale for that purpose.
Btw. everybody is invited to use the simulations and to play around with them

 

[Екатерина]

Perhaps you can take a look at these two, hoping they will be helpful to you

 

[Khron]

While working on concepts, I prefer to have the actual levels of the internal nodes. I

For transient simulations, sure. For AC ones there's literally no point, unless you insist on making the math difficult for yourself (and whoever else you're showing those graphs to).

In those screenshots, the "peak" level is somewhere around -35dB with a 1mV (Vpeak? RMS? Vpp?) input signal - whatever the hell does that mean? With "AC 1", you'll get clearer numbers (6dB's gonna mean a gain of 2, plain and simple, etc)

As i mentioned, you can set "AC 1000", and youll get the same smooth graph, just huge dB numbers, that's all it affects. But suit yourself...

 

[Itsme]

Perhaps you can take a look at these two, hoping they will be helpful to you

Not complete but showing the test circuit and some curves would possibly allow to tweak the model until it reproduces the shown curves... I'll give it a try.