Title :
A 0.5 /spl mu/m CMOS ADSL analog front-end IC
Author :
Cornil, J.P. ; Chang, Z.Y. ; Louagle, F. ; Overmeire, W. ; Verfaille, J.
Author_Institution :
Alcatel, Antwerp, Belgium
Abstract :
Asymmetrical digital subscriber line (ADSL) provides robust transport of data at up to 8 Mb/s on common twisted pair without interfering with classical telephone service. ADSL uses multicarrier modulation (DMT) to modulate up to 256 QAM into a 1.104 MHz frequency band, which requires a signal path with at least 66 dB of dynamic range for full performance. The circuit described operates either as ATU-C (central office) or as ATU-R (customer premises) ADSL analog front-end by swapping upstream and downstream filters.
Keywords :
CMOS analogue integrated circuits; digital subscriber lines; quadrature amplitude modulation; twisted pair cables; 0.5 micron; 1.104 MHz; 8 Mbit/s; ADSL; ATU-C; ATU-R; CMOS; QAM; analog front-end IC; asymmetrical digital subscriber line; common twisted pair; downstream filters; dynamic range; multicarrier modulation; signal path; upstream filters; Analog integrated circuits; CMOS analog integrated circuits; CMOS digital integrated circuits; CMOS integrated circuits; DSL; Frequency; OFDM modulation; Quadrature amplitude modulation; Robustness; Telephony;
Conference_Titel :
Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC. 1999 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-5126-6
DOI :
10.1109/ISSCC.1999.759209
