ltc2664 output range for unipolar

HI ;

i want to inquire that if LTC2664 can ouput 0V or not? i using this IC with only unipolar(V+ connect to 12V,V- connect to GND,using external LT6655-3 reference, and fix span).  under unipolar condition , what is the minimum output voltage ,please refer to below sch,Thanks!