Hey all!

I've been trying to test this Op-Amp I've got (model: LTC6268 datasheet is attached) and I have some doubts on how to correctly wire it up to a power supply.

I have a 2 channel power supply and I want to provide +2V and -2V to the positive and negative supply pins of the op amp.

How should i hook it up? Thanks to anyone that replies

 

Connect the + supply to the positive supply pin, and the - supply to the negative supply pin, just like the example on the fist page of the datasheet.

Bob

 

Like this:

 

Hi bob and iimagine, thanks for your replies!

The thing that always confuses me is the GND, I'm never sure if both channels share the same GND.
Following iimagine's picture, would these be correct?




The reason I'm confused is because in a document I saw this layout below (although it its in a inverting configuration, while i want non-inverting)


So is my new drawing correct or do I need to connect something to the -IN ping of the Op-amp as a common reference?

 

Hello,

The power supply also needs a ground:



Bertus

 

Hi Bertus, thanks for replying!

I added a GND connection to the drawing, is this correct?

 

Hello,

Yes, All ground symbols in a schematic are conected together.

Bertus

 

Awesome, thanks!

 

The thing that always confuses me is the GND, I'm never sure if both channels share the same GND.

That should be in the manual. If it isn't, you can check with a voltmeter.

 

As a general rule every component in a circuit needs a path (however convoluted) to common (gnd).
Thus you can't power an op amp from a supply that isn't connected to the op amp signal ground.