[sdiy] Best AVAILABLE OTA for building new designs?

[Ian Fritz]

CA3280 from alfa works well. I checked a few out in my standard test arrangement.

Ian

Ian

> On Aug 8, 2024, at 12:10 PM, Dan Snazelle via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> 
> imagine someone asked you to make some new synth modules.
> then imagine that the last time you did so in any quantity above one---  it was 2017. 
> 
> 
> 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.
> 
> 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. 
> 
> 
> So my question is this-- if I am thinking about design for manufacturing—what do you think the best option is? 
> 
> Has anyone tried the quad ALFA OTA? Is it even readily available? Same for the new SSM2040​.  
> 
> OR would you just use the 2164 instead? 
> OR would you just try to make discrete OTAS out of say the  BCM856DS //BCM847BS
> 
> thanks for any and all opinions on this. 
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