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Old 3rd July 2006, 04:27 AM   #1
ronardi is offline ronardi  Hong Kong
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Join Date: Jul 2004
Location: HK
Default choosing parts for a dac project


I would like to know, for a DAC, which one is more important?
transformer or the regulator? As I am going to buy a good double c-core transformer for the power supply, my friend told me that the regulator circuit is more prominent than transformer. I am a rookie, can anyone give me more advice?

Andrew Chan
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Old 4th July 2006, 06:29 PM   #2
Rtop84 is offline Rtop84  Poland
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Join Date: Apr 2006
Location: Poland
Decoulping caps at DAC chip are very important- it should be best as you can get-Oscon SG/SP or BG N. Regulators are important especially
for analog power supplyo of DAC chip (IMHO TL431 is quite good for this purpose,perhaps Jung regulator will be much better).
By the way, parts are very important but the most important thing is DAC topology and implementation(no-oversampling or oversampling,DAC chip choice and analouge stage of DAC). Sometimes dirty cheap chips(TDA1543) with maching parts and good implementation(Peter Daniel's version) play very very good.
Best regards,
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