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GB on forum DAC
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<blockquote data-quote="DACMan1" data-source="post: 18714" data-attributes="member: 112"><p>A lot of what you typed, says nothing. I have the quote on good reference, as i personally heard it from Dave himself, in a design course presented by him, and it came as a surprise to me as well. People in our RF department confirmed this from practical experiences. The problem with split planes is that your plane starts acting as a RF antenna, but in high frequencies in 100+MHz range, which will not affect any component in this design or any component downstream. From my own personal experience, splitting the analog and digital grounds does work best for audio in a 2 layer application at least. </p><p></p><p>In any event, having the option of excess capacitance would not hurt at all, and it does make a difference. ESP if you can mount the transformer, diodes, and big caps further away from the rest of the circuit. Anyway, you don't have to believe me, just do it and hear/measure the difference.</p></blockquote><p></p>
[QUOTE="DACMan1, post: 18714, member: 112"] A lot of what you typed, says nothing. I have the quote on good reference, as i personally heard it from Dave himself, in a design course presented by him, and it came as a surprise to me as well. People in our RF department confirmed this from practical experiences. The problem with split planes is that your plane starts acting as a RF antenna, but in high frequencies in 100+MHz range, which will not affect any component in this design or any component downstream. From my own personal experience, splitting the analog and digital grounds does work best for audio in a 2 layer application at least. In any event, having the option of excess capacitance would not hurt at all, and it does make a difference. ESP if you can mount the transformer, diodes, and big caps further away from the rest of the circuit. Anyway, you don't have to believe me, just do it and hear/measure the difference. [/QUOTE]
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GB on forum DAC
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