All of the first output terminals of the switches are coupled together to the first current mirror, all of the second output terminals are coupled together to the second current mirror, and {HEAD ~ the digital control signal} is coupled to {TAIL ~ the plurality} of switches to control their positions 
All of the first output terminals of the switches are coupled together to the first current mirror , all of the second output terminals are coupled together to the second current mirror , and { HEAD ~ the digital control signal } is coupled to { TAIL ~ the plurality } of switches to control their positions
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH