The sense resistors ensure that there is current sharing through {HEAD ~ each} of {TAIL ~ the current control stages} 
The sense resistors ensure that there is current sharing through { HEAD ~ each } of { TAIL ~ the current control stages }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL