<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">CA3280 from alfa works well. I checked a few out in my standard test arrangement.</div><div dir="ltr"><br></div><div dir="ltr">Ian</div><div dir="ltr"><br></div><div dir="ltr">Ian</div><div dir="ltr"><br><blockquote type="cite">On Aug 8, 2024, at 12:10 PM, Dan Snazelle via Synth-diy <synth-diy@synth-diy.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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imagine someone asked you to make some new synth modules.</div>
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then imagine that the last time you did so in any quantity above one--- it was 2017. </div>
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I am trying to get a handle on what the parts landscape is like now for cost-effective CV control. Back in 2017 the lm13700 was really the only available OTA . I was just starting to work with the ssm2164 at the time but never used it extensively.</div>
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In the interim I have built synth circuits but only in quantities of one where cost was no object and I was able to rely on my own extensive parts supply. </div>
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So my question is this-- if I am thinking about design for manufacturing<span class="_Entity _EType_OWA_HYPHEN _EId_OWA_HYPHEN_1 _EReadonly_1" style="display: inline-block;"><span id="hyphen2" class="hyphen">—</span></span>what do you think the best option
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Has anyone tried the quad ALFA OTA? Is it even readily available? Same for the new SSM2040. </div>
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OR would you just use the 2164 instead? </div>
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OR would you just try to make discrete OTAS out of say the BCM856DS //BCM847BS</div>
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thanks for any and all opinions on this. </div>
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