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<font size="2"><span style="font-size:11pt" class="ContentPasted0">> 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.</span></font></div>
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<font size="2"><span style="font-size:11pt" class="ContentPasted0">No that's an analogue function and should be derived from the analogue supplies and referenced to the analogue grounds. ADCs and DACs have well defined analogue and digital grounds which the
IC can survive being quite significantly apart.</span></font></div>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size: 11pt; color: rgb(0, 0, 0);" face="Calibri, sans-serif" color="#000000"><b>From:</b> David Huss <dh@atoav.com><br>
<b>Sent:</b> 22 February 2023 20:58<br>
<b>To:</b> synth-diy@synth-diy.org <synth-diy@synth-diy.org>; Mike Bryant <mbryant@futurehorizons.com>; synth-diy@synth-diy.org <synth-diy@synth-diy.org>; Ben Bradley <ben.pi.bradley@gmail.com><br>
<b>Subject:</b> Re: [sdiy] Signals leaking into the PSU?</font>
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<div class="PlainText">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.<br>
<br>
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.<br>
<br>
On February 22, 2023 8:41:08 PM UTC, Mike Bryant <mbryant@futurehorizons.com> wrote:<br>
>> Eurorack has a 5V supply for such things, but there's<br>
>> still a common ground (a non-zero resistance back to the power supply,<br>
>>and in common with the other power sources) that can get polluted by<br>
>>varying currents.<br>
><br>
>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 ?<br>
><br>
><br>
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