[sdiy] looking for a quad opamp

[jhaible at debitel.net]

I'm looking for a quad opamp to replace the LM324's in the PolyKorg
Envelopes.

Requirements:
=============

Unexpensive (need 25 of these)

Considerably faster than LM324 ( 10V/us slew rate would be fine)

Pin compatible with LM324 / TL084 etc.

Low input current (as 324, or better)

Single supply opertaion 15V with input common mode range including 0V
  and output swing down to ca. 0.5V without load


The last requirement will not allow classic BiFet opamps
like TL084 or LF347.

So I guess I have to look for a rail-to-rail quad opamp.
Any recommendations? 

Thanks,

JH.




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