The present invention dramatically reduces dynamic mismatches between the different current segments of a segmented current-mode DAC. The composition includes a straight-chain organopolysiloxane having silicon-bonded alkenyl groups, and with a viscosity of no more than 1,000 mPa\xb7s, a three dimensional network-type organopolysiloxane resin that is either wax-like or solid at 23\xb0 C. In the first zone, transmissions are transmitted on at least one frequency sub-band which is common to all of the plurality of cells.