Abstract: A hot melt adhesive comprises at least one polymer selected from the group consisting of polystyrene, polybutene, polyisobutene, linear low density polyethylene, polypropylene random copolymer, polypropylene, olefin block copolymer, polyolefins, styrene block copolymers, and ethyl vinyl acetate polymers; a tackifying resin; and at least one precisely end-capped polystyrene (PECPS). The use of the styrene-based oligomers and polymers with the precisely controlled end-groups in hot melt adhesive formulations to improve compatibility with polymers and block copolymers frequently used in such adhesives.

Abstract: A method and apparatus for converting an N-bit digital word to an analog voltage signal. A first circuit converts the MSBs of the N-bit word and a second circuit converts the LSBs. The first circuit includes a resistor array in series between reference nodes and a switch matrix providing a node voltage to a first buffer input responsive to an indication of the MSBs of the N-bit word wherein the buffer output provides the analog voltage signal. The second circuit includes a current device electrically isolated from the resistors of the first circuit and coupled to a second buffer input which is further coupled in a feedback arrangement with the buffer output. The current device provides a select current whereby the resistance of the feedback loop and the select current are cooperably modify the analog voltage signal incrementally corresponding to the LSBs of the N-bit digital word.

Abstract: The present invention provides for a method and apparatus for converting an N-bit digital word to an analog voltage signal in which a first circuit (410) provides for conversion of the most significant bits of the N-bit digital word and a second circuit (430) provides for the conversion of the least significant bits. The first circuit (410) includes an array of resistors coupled in series between reference nodes and a switch matrix for providing a node voltage to a first input of a buffer (420) responsive to an indication of the most significant bits of the N-bit digital word in which the buffer output provides the analog voltage signal. The second circuit (430) includes a current device electrically isolated from the resistors of the first circuit (410) and coupled to a second input of the buffer (420) in which the second input is further coupled in a feedback arrangement with the buffer output.