Maximum supply voltage for op amps

[El Heisenberg]

When a datasheet says the max supply voltage for say a TL082 is +18v:

http://www.st.com/stonline/books/pdf/docs/2300.pdf


Does that mean you can power the op amp with +18v and -18v using 0v for the vref?? Or is it only just 18v and the usual 4.5v goes up to 9?

[Gurner]

The pertinent info is in the plus & minus symbols in front  (table 1 in your datasheet you've linked to) ...±18V - therefore it'll handle 36V max supply.

[Mike Burgundy]

Possibly quite unneccesary to point out, but just in case: remember that Vref is "ground" as far as the opamp is concerned (as in: most opamps want a bipolar supply, and we usually fool them into buying a +/-4.5V supply with Vref at half supply or battery voltage, acting as ground level for the opamp....)

[El Heisenberg]

Now its very clear. Thanks