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11th July 2002, 05:22 PM
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#21 |
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Account Disabled
Join Date: Jul 2002
Location: North
  
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about Filtering V-ref
VOLTAGE-REFERENCE FILTERS
By R. Mark Stitt http://www-s.ti.com/sc/psheets/sbva002/sbva002.pdf well that's enough from groman |
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11th July 2002, 08:54 PM
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#22 |
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diyAudio Member
Join Date: Feb 2002
Location: Toronto
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LM4040 from National is pretty nice and really cheap.
http://www.national.com/pf/LM/LM4040.html Can't remember how the PSRR is, but the noise is very low. ADR421 from ADI comes to mind as well, but I think that is only in surface mount. I will have to dig way back in my notes, but I can remember using a transistor Vbe in reverse breakdown as a reference as well. We don't need something accurate, just low noise with good PSRR. Alvaius |
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