More specifically, the means for converting the digital control signal to the first and second currents comprises a plurality of current sources, weighted in accordance with {HEAD ~ the binary weights} of {TAIL ~ respective bits} in the digital control signal; and an equal plurality of two position switches coupled to the respective current sources and having first and second output terminals 
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More specifically , the means for converting the digital control signal to the first and second currents comprises a plurality of current sources , weighted in accordance with { HEAD ~ the binary weights } of { TAIL ~ respective bits } in the digital control signal ; and an equal plurality of two position switches coupled to the respective current sources and having first and second output terminals
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 REL TAIL TAIL TAIL TAIL TAIL TAIL 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