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Old 10th March 2009, 03:19 AM   #1
kl is offline kl  Europe
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Join Date: Jun 2008
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Default Voltage references for input and VAS stages

Hi,

I am looking for good voltage references for input and VAS stages.
LM329 has good impedance and noise characteristics, but voltage is fixed.
Low voltage LM385-1.2 and LM385-2.5 have worse impedance/frequency and noise characteristics. Can these be used in input stages?
Can I use TL431 instead of LM3XX? It seems better (datasheet) and can be 'regulated'.
Which is better or worse and why?
Any suggestions will be helpful.
Thanks.
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