Well, it's just an op-amp anyway, perhaps a little finnicky on wiring. I was wondering if anyone had wired up an LM3875 as a first order filter, and what the results were, whether it was stable etc.
Jack
Jack
jackinnj said:
I haven't tried this, but have seen an ap note (somewhere) on it, and have had some discussions with a fellow using these about the same. I will probably try it when i get mey gain klones going since at least a pr will be used for woofers. It is just an op-amp and it should be possible to easily do 2nd order, and maybe push 3rd order, 1st order should be easy.
dave
Re: Re: Anyone done this with an LM3875 or equiv?
It's ok as long as you remember that you need to maintain a gain of 10 (or whatever) for stability. So for a highpass you're fine but for lowpass a capacitor in the feedback loop will bring the thing into an unstable condition unless extra compensation is used.
planet10 said:
It's ok as long as you remember that you need to maintain a gain of 10 (or whatever) for stability. So for a highpass you're fine but for lowpass a capacitor in the feedback loop will bring the thing into an unstable condition unless extra compensation is used.
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