I'm using the TSOT package which has a fixed slave address. The ADDR pin is used as an alert on this one.

I think using an address of A3 should work on my device but it doesn't. I get a response from the device with addresses of A8 and A9. These appear to return the lowest and highest conversion values.

I haven't messed around with the result register pointer as I think it should be at 0h.