[sdiy] Burr Brown UAF42 Universal Active Filter?

[Yves Usson]

Check this !
http://home.swipnet.se/~w-49485/mmf.jpg

It's at Erik Gronberg's web-site
http://home.swipnet.se/~w-49485/e_eh30.htm


> Hi gang,
>
> I was perusing TI's site and stumbled across this chip.  I know state 
> variable filters are fairly easy, but this chip has integral 1000 pf 
> caps that are trimmed to +/-0.5% (dang!! - that's MOTM territory =0).  
> Looks to me that you could slap a couple of VTL5C3's (or your favorite 
> variable resistor of choice), a control circuit on it, and possibly a 
> resonance loop, stick a fork in it, and it's done.......or am I 
> missing something?
>
> Has anyone tried this chip?
>
> http://focus.ti.com/lit/ds/symlink/uaf42.pdf
>
> Cheers,
> Scott
>
>
>
> PeoplePC Online
> A better way to Internet
> http://www.peoplepc.com
>
>
-------------------------------------------------------------
Yves Usson

Lab. TIMC UMR5525 CNRS
Institut d'Ingéniérie et de l'Information de Santé (IN3S)
Faculté de Médecine
Domaine de la Merci
38706 La Tronche cedex

email : yves.usson at imag.fr, yves.usson at ujf-grenoble.fr

tel.  (+33) (0)456 520 074
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