aos
May one day solve the Mystery of the Whoosh
- Joined
- Jun 21, 2001
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There is a very good explanation of how asynchronous sample conversion works and theory behind it in AD1896A datasheets (www.analog.com), for those that are interested and have necessary technical background. You can also see a jitter rejection graph of its digital servo loop, which is very similar to a reclocker. However, reclocker does not alter the signal in any way while async sample converter does. On the other hand, ASC has much lower lock-on times (my reclocker takes almost 10 seconds to lock!) and is very flexible - works with any sample rate while a reclocker works with only one unless you have multiple crystals (so you're stuck at say 44kHz and can't decode even 48kHz). Reclocker also has a chance to lose a sample or read it twice while ASC cannot.