Part of the reason I bought the XBee WiFi was to use in a stand alone application and use the onboard ADCs.
After working with it, and doing the math, it appears the ADCs are 10 bit.
All the working documentation (manuals, etc) treat them as 10 bit. However the product specs, which one normally looks at before buying states 12 bit. This is a big difference, 1024 vs 4096 steps in a 2500 mV window is a big deal.
Here is the link to the specs
http://www.digi.com/products/wireless-wired-embedded-solutions/zigbee-rf-modules/point-multipoint-rfmodules/xbee-wi-fi#specs
any thoughts ?