I'm looking at using one of ST's MEMS gyros, however - unlike most of their parts, the datasheet is quite sparse on info. Here's the datasheet http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00254111.pdf
The part is an LY330ALH, which is an analog gyroscope. However, there is a pin on the device VREF, with very little information about it. Page 11 shows an outward arrow from the pin, so I presume it's a voltage reference used for ADCs, but nowhere does it mention what value it is.
In the documentation for an eval board, (one which I cannot find again) the VREF was connected to an MCU pin.
If I do not use the reference, can I safely presume I can leave it floating?