<html><body style="font-family: Helvetica,Arial,sans-serif; font-size: 12px;"><div>That XR2206 design would be very similar in complexity to an 8038-based one. The 8038 datasheet is worth reading and prototyping on a breadboard to learn more, and those chips are much more readily available than the XR2206.</div><br><div>For low-ish distortion (1%) on tri-to-sine it's not too hard and there are good designs out there that shouldn't be too hard find with a bit of googling. For a 'noise box' I think that would probably be just fine.</div><div><br></div><div>To get better than 1% you might find it easier to use a self-oscillating filter instead.<br></div><div><br></div><div>Cheers,</div><div>A.<br></div><br><br><blockquote class="atmailquote"><br>----- Original Message -----<br><div id="origionalMessageFromField" style="width:100%;display:inline;background:rgb(228,228,228);"><div style="display:inline;font-weight:bold;">From:</div> "Jean Bender" <lofideadbeat@gmail.com></div><br><div id="origionalMessageToField" style="display:inline;font-weight:bold;">To:</div>"Adrian Corston" <eidorian@aladan.net><br><div id="origionalMessageSentField" style="display:inline;font-weight:bold;">Cc:</div>"SDIY" <synth-diy@synth-diy.org><br><div style="display:inline;font-weight:bold;">Sent:</div>Mon, 27 May 2019 08:52:59 +0200<br><div id="origionalMessageSubjectField" style="display:inline;font-weight:bold;">Subject:</div>Re: [sdiy] xr2206<br><br><br>
Hi !<br>
thanks for your answers.<br>
I was looking for a simple sine generator design, for building a<br>
specific noise box. this schematic was talking to me a lot :<br>
https://www.sonelec-musique.com/images2/electronique_gene_audio_009b.gif<br><br>
I gonna look after the others chips, maybe a 555 or 4046 would be a<br>
good start, easy to find and cheap, but i would need a good tri to sin<br>
converter.<br>
I'd like to have a good sine shape, with low distortion...<br><br>
Also, maybe using a LM13700 would be an idea ?<br><br>
Best,<br>
J.<br><br>
Le lun. 27 mai 2019 à 06:20, Adrian Corston <eidorian@aladan.net> a écrit :<br>
><br>
> There are many options if you're willing and able to redesign the circuit.<br>
><br>
> e.g. 8038, 566, 555, CEM3340, 4046, 40106, XR4151...<br>
><br>
> Cheers,<br>
> A.<br>
><br>
><br>
> ----- Original Message -----<br>
> From: "Ben Bradley" <ben.pi.bradley@gmail.com><br>
> To:"SDIY" <synth-diy@synth-diy.org><br>
> Cc:<br>
> Sent:Sun, 26 May 2019 23:06:08 -0400<br>
> Subject:Re: [sdiy] xr2206<br>
><br>
><br>
> There was a thread here over a year ago with subject "NE566 Boon" that<br>
> discussed the "current" XR2206 - the original was discontinued years<br>
> ago, but there are many small function generator kits on ebay<br>
> featuring the XR2206 - it seems that THESE are not the same, and don't<br>
> work with a power supply above 11V or so. If that's okay with you,<br>
> maybe the ones in the kits will work for you. About the only way to<br>
> get a "real" one is buy a used device (a small function generator)<br>
> from a decade or more ago that used a XR2206, I suspect there are<br>
> several brands and models of small, inexpensive function generators<br>
> that used the XR2206. Either of these is a bit of an expensive way to<br>
> get the chip.<br>
><br>
> I'm pretty sure there'a no alternative (as in direct replacement) for<br>
> the XR2206.<br>
><br>
> Do you have a design you want to make that uses the XR2206?<br>
><br>
> On Sun, May 26, 2019 at 9:06 PM Jean Bender <lofideadbeat@gmail.com> wrote:<br>
> ><br>
> > Hi SDIY list !<br>
> ><br>
> > I'm looking for buying some XR2206 ics, and i'm bit lost, as it seems<br>
> > they are no more produced.<br>
> > Would someone knows a good supplier which could still sell some proper ones ?<br>
> ><br>
> > Is there any good alternative ic i could go for actually ?<br>
> ><br>
> > Thanks !<br>
> > J.<br>
> > _______________________________________________<br>
> > Synth-diy mailing list<br>
> > Synth-diy@synth-diy.org<br>
> > http://synth-diy.org/mailman/listinfo/synth-diy<br>
> _______________________________________________<br>
> Synth-diy mailing list<br>
> Synth-diy@synth-diy.org<br>
> http://synth-diy.org/mailman/listinfo/synth-diy<br>
><br>
> _______________________________________________<br>
> Synth-diy mailing list<br>
> Synth-diy@synth-diy.org<br>
> http://synth-diy.org/mailman/listinfo/synth-diy<br><br><br><br>
-- <br>
Jean Bender<br><br>
Hak Lofi Record<br><br></blockquote></body></html>