Thoughts on this low power regulator ? - Page 3 - diyAudio
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Old 11th July 2002, 06:22 PM   #21
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Default 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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Old 11th July 2002, 09:54 PM   #22
alvaius is offline alvaius  Canada
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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.

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