[sdiy] Spice model for CA3080 OTA

David G Dixon dixon at mail.ubc.ca
Wed Oct 16 21:14:36 CEST 2013


Yes.  From what I remember, 2 mA fries LM13700, and 1 mA is about the max
you should ever give it under normal circumstances.

I hate OTAs.  I have never regretted switching all of my designs to SSM2164
VCAs (now V2164). 

> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl 
> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Paul Perry
> Sent: Tuesday, October 15, 2013 11:53 PM
> To: synthdiy diy
> Subject: Re: [sdiy] Spice model for CA3080 OTA
> 
> FWIW, the maximum input current on an OTA is not very large.
> It is pretty easy to exceed and blow the chip, especially 
> when prototyping or tweaking (or just shorting the control 
> pin with a probe.)
> 
> I have plenty of "half" LM13700s to prove this...
> 
> paul perry Melbourne Australia
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