<div dir="ltr">Earliest reference to CMOS linear applications i can find is Nationals 1973 App Note. While AN-88 doesn't specifically call out a schmitt trigger inverting buffer like the '106, the standard integrator config depicts.<div><div>I wouldn't be surprised if there's an earlier "Designer's Casebook" other "Idea for Design" that demonstrates linear application of CMOS.</div><div><br></div><div>Don't know if oldest but 1979's Syncussion by Pearl uses 3 CD4069 buffers per VCO. 1 as integrator. 2 in series with feedback to build out a schmitt buffer.<br><div><br></div><div>p</div><div><br></div></div></div></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br>
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</table><a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"></a></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Nov 20, 2017 at 5:20 PM, Michael E Caloroso <span dir="ltr"><<a href="mailto:mec.forumreader@gmail.com" target="_blank">mec.forumreader@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Buchla may had been the first to use CMOS. He was always on the<br>
cutting edge of technology back then.<br>
<br>
Barring that, I'd guess ARP Omni.<br>
<span class="HOEnZb"><font color="#888888"><br>
MC<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
On 11/20/17, S Ridley <<a href="mailto:spridley1@gmail.com">spridley1@gmail.com</a>> wrote:<br>
> I think RCA were the first to manufacture CMOS, so early RCA databooks<br>
> would be a good place to look.<br>
><br>
> The 1973 databook:<br>
><br>
> <a href="http://www.introni.it/pdf/RCA%20-%20CMOS%20Ic%20Databook%20SSD%20250C%201973.pdf" rel="noreferrer" target="_blank">http://www.introni.it/pdf/RCA%<wbr>20-%20CMOS%20Ic%20Databook%<wbr>20SSD%20250C%201973.pdf</a><br>
><br>
> has a 40106 datasheet and an astable circuit. The 40106 was near the end<br>
> of the list in this book, so I don't think you'd have to look very much<br>
> further back. 1972 perhaps?<br>
><br>
><br>
> I wonder which synth was first to use CMOS?<br>
><br>
> Steve<br>
><br>
><br>
> On 15 November 2017 at 19:49, bbob <<a href="mailto:fluxmonk@gmail.com">fluxmonk@gmail.com</a>> wrote:<br>
><br>
>> anybody know the origins or first publication of the 40106 astable<br>
>> multivibrator circuit? i've found it in a 1992 intersil data sheet, but<br>
>> i<br>
>> think it's been around longer than that....<br>
>><br>
>> bbob drake<br>
>><br>
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