Title :
A 5V AC-Powered CMOS Filter-Selectivity Booster for POTS/ADSL Splitter Size Reduction
Author :
Sackinger, Eduard ; Tennen, Aner ; Shulman, Dima ; Wani, Barkat ; Rambaud, Marta ; Lim, Drahoslav ; Larsen, Fred ; Moschytz, George S.
Author_Institution :
Conexant Syst., Red Bank, NJ
Abstract :
A 0.5mum CMOS chip contains a 5th-order continuous-time filter, a low output-impedance driver, and an active rectifier. The chip boosts the selectivity of an external passive LC LPF and achieves an ADSL isolation of 70dB at 30kHz, while maintaining a passband flatness of 0.23dB. It consumes 35mW from a 5V supply and reduces the number of transformers and the size of POTS/ADSL splitters
Keywords :
CMOS integrated circuits; continuous time filters; digital subscriber lines; driver circuits; low-pass filters; passive filters; rectifying circuits; 0.5 micron; 30 kHz; 35 mW; 5 V; ADSL isolation; ADSL splitter size reduction; CMOS chip; CMOS filter-selectivity booster; POTS splitter size reduction; active rectifier; continuous-time filter; low output-impedance driver; passive LC LPF; Active circuits; Active filters; CMOS technology; Calibration; Central office; Frequency; MOS devices; Passive filters; Protection; Transformers;
Conference_Titel :
Solid-State Circuits Conference, 2006. ISSCC 2006. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0079-1
DOI :
10.1109/ISSCC.2006.1696267
