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

fYear

1999

fDate

17-17 Feb. 1999

Firstpage

238

Lastpage

239

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC. 1999 IEEE International

Conference_Location

San Francisco, CA

ISSN

0193-6530

Print_ISBN

0-7803-5126-6

Type

conf

DOI

10.1109/ISSCC.1999.759209

Filename

759209