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Browse Journals & Magazines > Solid-State Circuits, IEEE Jo ...> Volume:27 Issue:12 Help

A highly efficient CMOS line driver with 80-dB linearity for ISDN U-interface applications

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3 Author(s)
Kohorramabadi, H. ; AT&T Bell Lab., Holmdel, NJ, USA ; Anidjar, J. ; Peterson, T.

A fully differential CMOS line driver intended for ISDN U-interface applications is reported. Design details with emphasis on a novel high-swing output stage are presented. The output stage incorporates a class-B stage in parallel with the conventional class-H/B structure, allowing high linearity, high power efficiency, and well-controlled quiescent current. The prototype line driver exhibits total harmonic distortion of -83 dB for an output voltage swing of 7 V pp-diff. It maintains linearity on the order of 78 dB for nearly rail-to-rail output voltage swing of 9 Vpp-diff for signal frequencies of up to 40 kHz. The chip, built in a 0.9-μm technology, occupies an active area of 0.63 mm2. It operates from a single 5-V power supply and dissipates 20-mW quiescent power

Published in:
Solid-State Circuits, IEEE Journal of  (Volume:27 ,  Issue: 12 )

Date of Publication: Dec 1992

Page(s):
1723 - 1729
ISSN :
0018-9200
INSPEC Accession Number:
4338271
Digital Object Identifier :
10.1109/4.173098
Product Type:
Journals & Magazines
Date of Current Version :
06 August 2002
Issue Date :
Dec 1992
Sponsored by :
IEEE Solid-State Circuits Society

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