[SpudHarris]

Hi guys,

have bought the ARZ version of the AD823 Opamp for my cmoy/portable use. I also have a few of these boards but before soldering I need to know if they are suitable?

I've got several SOIC adapters and Brown Dogs but none have the 2 extra holes from pins 4 and 8 can anyone shed some light before I get the soldering iron out.

Thanks in advance.

 

[Pars]

You got a DMM? Ohm the pins out. If they map out 1-1, 2-2, etc., then yes they are suitable. If they don't then they aren't. The holes are what is known as a via, which is a plated thru hole used to switch board layers, in this case top to bottom.

 

[kuroguy]

Those are vias to get the trace to the other side of the board so they can get past the traces for pins 3 and 7. it could have been accomplished with a single sided board if the traces snaked between pins 2/3 and 6/7.

 

[SpudHarris]

Thanks for your help guys, all sorted now!

I'm out....