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Well, I've just discovered ripple on 3.3V AVCC dual module (not the latest 3.5V) and this ripple is about 400 mVpp on both channels and frequency is about 274KHz. I wouldn't call it normal behavior. What should I do? 
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Buy the latest version AVCC module.
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 1 user thanked Brian Donegan for this useful post.
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OMG, I was really dissatisfied with the sound of the Buffalo III, it was thin, edgy, harsh, rude, unlistenable actually and I thought something is fundamentally wrong either with my Buffalo setup, or my system as a whole but I would never expect that dual AVCC module can be a culprit with these oscillations  . I had no desire to listen to music at all, sometimes for several weeks(months) at least on my system. Last winter I removed Crystek 100MHz clock and went to synchronous road with Acko's pcbs but to no avail. I mean everything worked from the start but the sound was still unbearable. I have the scope from the last November but it never occurred to me to probe the little buggers. And now, it's a long night ahead of me.
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I am not shure if I have the latest version of the AVCC module. I ordered my second BIIIse in May this year ( with Tridents and AVCC ).
Brian ? Anyone ?
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I'm quite sure it's the previous version. Brian just posted on the diyaudio forum that the new version is now readily available.
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One SOIC-8 package -> Older version Two SOIC-8 packaes -> Newest version I have actually been shipping the new version for several weeks, but not all the way back to May :) Edited by user Monday, November 24, 2014 10:08:44 PM(UTC)
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Thx
An order is on your way.
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Hi Brian,
sorry for being overcautious.
If I'll order AVCC from Trident page now, I'll get AVCC new version - v3 or something (not v2.1 as it is now on Trident page)?
Thanks,
Fedor
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Quote:
Originally Posted by BrianDonegan
Yes. One version at a time [helps] keeps me sane
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1 user thanked musicman for this useful post.
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