A bit-stream digital-to-analog converter with 18-b resolution. - Ben M. J. Kup; Eke Carel Dijkmans; Peter J. A. Naus; Jack G. Sneep (IEEE J. Solid State Circuits, 1991)

A DSP-based hearing instrument IC. - Harry Neuteboom; Ben M. J. Kup; Mark Janssens (IEEE J. Solid State Circuits, 1997)