Title :
22.7 A 14b 4.6GS/s RF DAC in 0.18μm CMOS for cable head-end systems
Author :
Brandt, Brian ; McMahill, Dan ; Miaochen Wu ; Kalthoff, Paul ; Kuckreja, Ajay ; Ostrem, Geir
Author_Institution :
Maxim Integrated, North Chelmsford, MA, USA
Abstract :
Cable head-end systems typically employ multiple QAM modulator signal chains to synthesize the entire TV spectrum for triple-play services, resulting in high power, cost, and size. The DAC reported here can directly synthesize 160 DOCSIS 3.0 compliant 6MHz QAM channels, spanning the entire cable band of 43 to 1003MHz. It thereby enables low-cost, low-power head-end systems for new cable standards such as the converged cable access platform (CCAP) for triple/quad play services.
Keywords :
CMOS digital integrated circuits; cable television; digital-analogue conversion; low-power electronics; modulators; quadrature amplitude modulation; CCAP; CMOS process; DOCSIS 3.0 compliant QAM channels; RF DAC; TV spectrum; cable head-end systems; converged cable access platform; frequency 43 MHz to 1003 MHz; frequency 6 MHz; low-cost low-power head-end systems; multiple QAM modulator signal chains; size 0.18 mum; triple-quad play services; word length 14 bit; CMOS integrated circuits; Cable TV; Calibration; Clocks; Quadrature amplitude modulation; Switches;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4799-0918-6
DOI :
10.1109/ISSCC.2014.6757483
