[sdiy] LM13700 troubles yet again

[David G Dixon]

Good God, man, why are you even considering doing this with 13700, when the
linearized 2164 does it perfectly?
 

> -----Original Message-----
> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On 
> Behalf Of Tim Ressel
> Sent: Wednesday, September 20, 2017 12:09 PM
> To: SYNTH DIY
> Subject: [sdiy] LM13700 troubles yet again
> 
> Hi,
> 
> I am breadboarding the 4-Q Multiplier from EN and the 13700 
> datasheet, using the 13700 in place of the 3080. What I am 
> seeing is incomplete cancellation due to distortion in the 
> 13700, causing a minimum signal out of about 100-200mV. I 
> patched up the same circuit using a 13700-based VCA and an 
> attenuverting mixer and got the same result: 
> incomplete cancellation due to distortion.
> 
> I'm disillusioned with the 13700. It has given me nothing but 
> problems.
> 
> 
> --
> --Tim Ressel
> Circuit Abbey
> timr at circuitabbey.com
> 
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