SOPA: A high-efficiency line driver in 0.35 /spl mu/m CMOS using a self-oscillating power amplifier

@article{Piessens2001SOPAAH,
  title={SOPA: A high-efficiency line driver in 0.35 /spl mu/m CMOS using a self-oscillating power amplifier},
  author={Tim Piessens and M. Steyaert},
  journal={2001 IEEE International Solid-State Circuits Conference. Digest of Technical Papers. ISSCC (Cat. No.01CH37177)},
  year={2001},
  pages={306-307}
}
Recently, with development of xDSL technologies, design of line drivers regains attention since the thermal limitation at the central office side (CO) demands high-efficiency line drivers. This specification becomes more severe since for the ADSL standard Discrete Multi Tone (DMT) modulation is chosen. DMT signals have a high crest factor (CF=V/sub max//V/sub min/) and demand a highly-linear line driver. Since efficiency of a class AB line driver ideally is inverse proportional to the CF, the… CONTINUE READING
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