[sdiy] Unused SSM2164 cell

David G Dixon dixon at mail.ubc.ca
Mon Jul 20 21:19:38 CEST 2015


You can just leave it all unconnected.  

The control pin is already grounded internally through an internal 5k
resistor, and the input and output pins are also internally connected to
transistor collectors.

I do it all the time.


> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl 
> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of 
> Olivier Gillet
> Sent: Monday, July 20, 2015 2:31 AM
> To: synth-diy diy
> Subject: [sdiy] Unused SSM2164 cell
> 
> Hi all,
> 
> I have finished a design which uses only 3 of the 4 cells of 
> a SSM2164. The board is already crammed so I can't follow my 
> own advice which would have been to try to sneak in an 
> "easter egg" VCA accessible through extra pads on the back of 
> the module.
> 
> So what would be the best way to connect an unused SSM2164 
> cell? Would the stability RC network be needed on the unused input?
> 
> Thanks in advance for your insights!
> Olivier
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