Hello Andy,

> don't know, but may be usefull too. Look at MChip digital pots and app.
> notes describing programable low pass filter.

    I've seen these notes. Althought very interesting, they're some form of
fixed filter design, but using digital pots to make if variable. It's not a
true VCF. And I think a coulpe of digital pots will be more expensive than
the MAX291.

    Thanks anyway,

    Brusque

-----------------------------------
Edson Brusque
Research and Development
C.I.Tronics Lighting Designers Ltda
(47) 323-2685  /  (47) 9993-6453
Blumenau  -  SC  -  Brazil
-----------------------------------

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