Wrong values on silkscreen would be nice bonus to copypasters, waste theirs time trying to determine where problem is hiding...
Are thise 100nF decoupling caps really film caps? They need to be low-inductance, MLCC ceramic is normal for this.
to be honest i did the footprints a bit sloppy, i just used a generic rectangle footprint without much thought, need to make a proper BOM , dont know what actual components im getting for it but thanks for the heads up
Baruk, when you follow values in my schematic you cant go wrong.
This is several thousand times build.
https://purifi-audio.com/shop/eval1-eval1-stereo-1et400a-evaluation-kit-1610/document/588
https://www.hypex.nl/media/d2/d7/f8/1645786900/UcD180_OEM_R4.pdf
I use wima fks2 100n always without problems.
This is several thousand times build.
https://purifi-audio.com/shop/eval1-eval1-stereo-1et400a-evaluation-kit-1610/document/588
https://www.hypex.nl/media/d2/d7/f8/1645786900/UcD180_OEM_R4.pdf
I use wima fks2 100n always without problems.
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thanks monstercore. i will probably use your values. only thing i was thinking was to take out all the unwanted noise and DC before it goes through the opamp?
i guess i wanted to personalise it a bit so i didnt feel like a plagiarist haha 🙂 if it doesnt perform as well as your design perhaps i will just roll back to yours.
i guess i wanted to personalise it a bit so i didnt feel like a plagiarist haha 🙂 if it doesnt perform as well as your design perhaps i will just roll back to yours.
Hi folks any idea why im getting a DRC error for these Via's ? theyre just for the purpose of screwing the board to the chassis standoffs. i realise it probably doesnt matter and I can ignore it but im just curious. theyre all connected to the big blue ground plane, do I need to put traces on the top copper layer too? surely it doesnt matter if the ground plane connects all the grounds.. ?
When you have a via it expects two connections. I use a soldier island with 3mm hole and 6mm outside.
Via means "way" or "through", a way implies connecting two things. If you want a mounting hole don't use a via, use a pad? Not sure what CAD tool you are using there, some allow drill holes that aren't pads too.
Its the newest Kicad. I might make only one screw my chassis ground actually, probably not good to have 6 chassis grounds?
Ah ok so you connect a GND rail trace to your solder island on a different layer / top layer ?
Ah ok so you connect a GND rail trace to your solder island on a different layer / top layer ?
That assuming the source impedance is 160 ohms or less - are you sure that's a wise assumption? Normally an audio input is 10k or 47k impedance, and although often driven by a low impedance, it doesn't have to be (ie might be driven by a 10k volume pot for instance).
no theres no input pots. its just straight line in from interface. only pot is a 1k trimmer bridged between the two opamp noninv inputs to trim the gain.
you got a good point though , i didnt factor in input impedance. to be honest, I think im just going to build it with my chosen values and hotswap different components noting high freq response to taste on the scope? if its way off when testing the first channel, buying 24 more film caps isnt the biggest stress in the world
you got a good point though , i didnt factor in input impedance. to be honest, I think im just going to build it with my chosen values and hotswap different components noting high freq response to taste on the scope? if its way off when testing the first channel, buying 24 more film caps isnt the biggest stress in the world