[sdiy] Signals leaking into the PSU?

[Sean Ellis]

I was wondering about that, would seperating the digital and analog grounds using 3 pins each on the Euro power connector give any benefit?
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From: Synth-diy <synth-diy-bounces at synth-diy.org> on behalf of David Huss <dh at atoav.com>
Sent: Wednesday, 22 February 2023 9:58 PM
To: synth-diy at synth-diy.org <synth-diy at synth-diy.org>; Mike Bryant <mbryant at futurehorizons.com>; synth-diy at synth-diy.org <synth-diy at synth-diy.org>; Ben Bradley <ben.pi.bradley at gmail.com>
Subject: Re: [sdiy] Signals leaking into the PSU?

The existing IDC connector would have the potential to use different grounds, so this would be a matter of agreeing on a standard and creating a busboard.

But as a circuit designer I am not sure how much I'd rely on the 5V from the busboard, especially for things like ADC and DAC references.

On February 22, 2023 8:41:08 PM UTC, Mike Bryant <mbryant at futurehorizons.com> wrote:
>> Eurorack has a 5V supply for such things, but there's
>> still a common ground (a non-zero resistance back to the power supply,
>>and in common with the other power sources) that can get polluted by
>>varying currents.
>
>I'm not a Eurorack person, but I would have expected separate digital and analogue grounds back to the PSU.  If not available, couldn't somebody add it as an option ?
>
>
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