[sdiy] Unused SSM2164 cell

Richie Burnett rburnett at richieburnett.co.uk
Mon Jul 20 13:02:36 CEST 2015


Definitely include the compensation network. You don't want to risk the unused amplifier oscillating at several Mhz and upsetting the other amplifiers in the package, just for the sake of one R and one C.

-Richie,

Sent from my Xperia SP on O2

---- Olivier Gillet wrote ----

>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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