[sdiy] An Improved Sine Shaper Circuit

[Ullrich Peter]

Hi!

Eventual also interesting:  AN-263 Sine Wave Generation Techniques
http://www.ti.com/lit/an/snoa665c/snoa665c.pdf

Ciao
Peter

http://www.ullrich.at.tt


-----Ursprüngliche Nachricht-----
Von: Synth-diy <synth-diy-bounces at synth-diy.org> Im Auftrag von Neil Johnson
Gesendet: Dienstag, 21. April 2020 14:56
An: Tom Wiltshire <tom at electricdruid.net>
Cc: rburnett at richieburnett.co.uk Burnett <rburnett at richieburnett.co.uk>; SDIY List <synth-diy at synth-diy.org>
Betreff: Re: [sdiy] An Improved Sine Shaper Circuit

Hi Tom,

> > http://www.soundsemiconductor.com/downloads/ssi2130datasheet.pdf

> Thanks for bringing that to my attention, Neil. That’s a fantastic little chip! Very glad to see manufacturers starting to go beyond clones of what had been done before and produce some truly 21st century analog synth chips. The sine shaper is the least of what that can do! Great stuff.

Yeah it's amazing what's coming out these days :)

On the topic of tri-to-sine conversion, the vintage AD639 reportedly gets distortion levels down to -74dB:
https://www.analog.com/media/en/technical-documentation/obsolete-data-sheets/AD639.pdf

There's a talk Barrie gave somewhere in YouTube where he explains how it works.  Discussion on this picks up here:
https://www.muffwiggler.com/forum/viewtopic.php?p=2446855#p2446855

Barrie was a genius....RIP.

Cheers,
Neil

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