Voltage references for input and VAS stages

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K

kl

Member
Joined 2008
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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