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D/A conversion interface design for DMT-ADSL applications

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3 Author(s)
Wikner, J.J. ; Dept. of Electr. Eng., Linkoping Univ., Sweden ; Yonghong Gao ; Nianxiang Tan

For high-speed internet access, high-performance analog front-ends are needed, and data converters are one of the crucial building blocks in these bent-ends. In this article we will report on the modeling and design of a D/A conversion interface for a DMT (discrete multi tone)-based ADSL system that could be integrated into a complete CMOS analog front-end. We will discuss the DMT transmit spectrum and its impacts on data converters, we will focus on modeling and simulating of the whole D/A interface, and we will describe a test chip implemented in a 0.6 μm CMOS process.

Published in:

Circuits and Devices Magazine, IEEE  (Volume:14 ,  Issue: 6 )