Sorry to drag this ancient thread back up, but I had put that generator aside due to the wacky half sines I mentioned in post eleven and I have other stuff which serves the same purpose.
I got curious about it the other day and breadboarded a clone to try to see what was causing it. Comparing differences in the schematic I used and Exar's datasheet, it seems to be in the parts tied to that amplitude pot on the 2206's pin3. Everyone other than that schematic I used seems to include that pair of 5.1k resistors between the pot and Vcc/ground. Adding them seems to straighten things up here, but I was wondering what the ideal way to implement that would be, considering mine is using this opamp based floating ground. Are the earthbound 5.1k resistor and the cap in the datasheet now taken to AGND? In the schematic I had, there is a 1uF cap in a similar location, but it's tied to the regular circuit ground. If they do float, are they, and the ground for the wave output jack the only things which should be using AGND?
Thanks (in the picture, the faulty schematic is at the top, Datasheet version is bottom)