Substrate (SS) pins on LSK389/489?

[Wavelength]

Gang,

Asked Linear Systems and no response.

Anyone know what to do with the SS pins (are they tied together, I would imagine so will test) on the LSK389/489 SOIC packages?

I use these in a simple buffer at IDSS on a +/-6V system on a guitar pedal. Yay I know over doing it is my specialty 🙂

Do I ground these, -V, +V or just ignore them?

Thanks,
Gordon

 

[Wavelength]

Never mind, got the answer from LS:

We recommend both SS (Substrate) pins to be grounded.

This is when we get best noise performance and about 80+% of our customers use LSK389 this way.

Next option is leave these pins floating (no connect), voltage noise could be higher very slightly, 1% to 3% higher, which is very small increase.