Integration and system design trends of ADSL analog front ends and hybrid line interfaces

Author

Lee, Sang-Soo

Author_Institution

Broadband Access Div., LSI Logic, San Jose, CA, USA

fYear

2002

fDate

2002

Firstpage

37

Lastpage

44

Abstract

System optimization of the Analog Front End (AFE) and hybrid line interface is a key contributor in achieving high data rate and long reach for Asymmetric Digital Subscriber Line (ADSL) modems. Following a brief review of the ADSL system, the basic building blocks in an AFE, analog line interface, and hybrid matching issues are introduced. Integration trends of a single-channel AFE and circuit design challenges for multi-channel AFE are then presented. Line driver technologies and line receiver design issues are discussed with emphasis on the tradeoff between noise and linearity. Finally, design challenges for a highly integrated ADSL modem chipset with minimal external components are addressed.

Keywords

amplifiers; analogue integrated circuits; application specific integrated circuits; circuit feedback; digital subscriber lines; driver circuits; impedance matching; modems; ADSL modem chipset; analog front end; asymmetric digital subscriber line; hybrid line interface; line driver technologies; line receiver design issues; linearity; multi-channel front end; noise; system optimization; Central office; Circuit synthesis; Costs; DSL; Driver circuits; Frequency; Internet telephony; Large scale integration; Logic; Modems;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 2002. Proceedings of the IEEE 2002

Print_ISBN

0-7803-7250-6

Type

conf

DOI

10.1109/CICC.2002.1012762

Filename

1012762