Many all over! On the first floor, towards the back close to the restrooms, really closed to Helados Bon. They use to have one right next to the exit doors but I don't remember seeing it last week when I was their. It might still be there.
Be sure to advise your bank that you'll be out of your normal "zone"! I got to SDQ and my ATM Didn't work - the bank blocked it! (But yes, there are pleanty of ATMs as you leave the terminal)
