64/256 QAM chip-set for digital CATV application
Y. Ishizawa, Yoshihiro Yanai, I. Nakayama · 2005
A small and cost effective 16/32/64/256 QAM receiver chip-set is developed for next generation digital CATV systems. The QAM receiver was partitioned into a two-chip set, analog and digital chip for board size reduction. Most of all the analog parts except the tuner is incorporated in one chip. The digital adaptive equalizer with about 470 k-transistors has been implemented on a 35 mm/sup 2/ die using a 0.5 /spl mu/m CMOS technology and with an optimized filter circuit.