xc43 referance voltage

Ed Schippers 2 years ago in Expansion modules / XC4x updated by Gustav Widén (System support) 12 months ago 3

On the XC4x serie there are multiple Vref+ and Vref- and on both C1 and C2 

Are these interaly connected in the module? 

Or are they seperate from eachother and serve only dedicated Vin's?

Best Regards Ed

Hi Ed, the Vref's are separate.  When using to power a device connected to a particular input, say a VIN, you have the capability of selecting which +Vref is associated with that input channel. (Reference voltage selection) If the selected +Vref has an error, then the input channels associated with it would take on their error value.

Does this also apply to the VREF-GNDs?  Do they actually go into the circuit boards, or are they just all tied to the -BATT for the module?  Can +BATT shorting to one of the VREF-GNDs damage the module?


The -VREF GND pins are all connected internally, and also to the module -BAT pin. 

Shorting +BAT to a -VREF pin will blow the external fuse, assuming it is fitted.