Found: Aphex 1537A VCA Datasheet

[Freq Band]

Those are the chips I have, but not the "A" version.
(OOPs, looked at them again, some are the "a" ver.)

http://www.groupdiy.com/index.php?topic=18069&highlight=vca

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[gyraf]

A bit more, maybe useable:

http://www.gyraf.dk/schematics/Aphex_1537A_VCA.pdf
http://www.gyraf.dk/schematics/Aphex_VCA_505_card.pdf

Jakob E.

 

[gyraf]

You're very welcome!

 

[okgb]

Which came from me , i believe

btw i have some of the ceramic version of the chip ,
if anybody is interested