Okay, got you! Thanks again!
No worries, I went ahead and updated the BOM files on Github with the right parts for the 1512 version.As for the mouser-codes, I am willing to help but it's true that I am not (yet) very much used to work with github. So I will have to post the codes here.
No problem. I use DesignSpark so no KiCad files.I hope you plan to honor the CC-BY-SA license, and publish your design files as well, bohrok2610. Either here or on Github. Looking forward to seeing them.
@ojg amazing project! Maybe it's time to start offering built kits? I would love to buy one.
The boost regulator on my board could quite easily be made into a plugin-board. SilentSwitcher boards have very similar DC converter operating at same switching frequency (2MHz) so I would not expect any switching noise even when placed inside the chassis. USB PD controller can be left unpopulated if not needed. Besides it needs to be preprogrammed through I2C so not very easy for diy.I wonder though if it could be retrofitted as a plugin-board to my existing design. And there would be the option of having it externally for those worried about switching noise inside their preamp.
Of course there's always this tradeoff, but typical output voltage swing of 1510 is said to be +/-13.3V, so I think we still may have plenty of headroom to go with that (at least 10dB). Further than that, we would keep best noise performances everytime as we are at 60dB. I'm not trying to debunk the switched gain solution, just to know if there's another interesting one for this chip.Choosing the gain in the mic preamp is always a tradeoff between SNR and headroom, and by having a fixed gain and then attenuation that tradeoff can't be adjusted.