A differential digital-to-analog converter is disclosed. In one embodiment, the front tether panel is comprised of two or more tether segments that cut in alignment with the warp and the fill of the fabric blank, while the rear tether panel is comprised of two or more tether segments that are cut on the bias with respect to the warp and the fill of the fabric blank. The multiple feedback CMOS VCO maintains an amplitude of a VCO signal while reducing a risefall time of the VCO signal. The complexes are obtainable by dissolving each of the two starting products in a common solvent, then joining together the two solutions in relative amounts such as to contain the same number of equivalents of the two starting products, evaporating the solvent and then drying and, if required, pulverizing and sieving the product so obtained.