Design of a current steering CMOS D/A converter with an adaptive control switch and a novel layout technique
While the CMOS analog circuits can be designed with the minimum-gate-length of the fabrication process in the alpha-power law MOSFET model, the length of a MOSFET gate has been chosen to be a larger scale than the minimum-gate-length in the conventional Shockleypsilas square model. In this paper, we...
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Published in | 2008 IEEE International Conference on Integrated Circuit Design and Technology and Tutorial pp. 29 - 32 |
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Main Authors | , , , , , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
01.06.2008
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Subjects | |
Online Access | Get full text |
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Summary: | While the CMOS analog circuits can be designed with the minimum-gate-length of the fabrication process in the alpha-power law MOSFET model, the length of a MOSFET gate has been chosen to be a larger scale than the minimum-gate-length in the conventional Shockleypsilas square model. In this paper, we describe a 6-b 100 MSPS CMOS current steering digital-to-analog converter (DAC) with the alpha-power law model. In order to improve the matching characteristics of the DAC current cell, moreover, we introduce a new and unique adaptive-control-switch (ACS) and a common current cell layout technique using a tournament algorithm. The prototype circuit has been fabricated with a Samsung 1.8 V, 0.18 mum, 1-poly, 5-metal CMOS technology. It occupies 0.52 mm 2 of silicon area with 15.8 mW power consumption. The fabricated chip area and the measured power dissipation are reduced by 30% and 25% over conventional ones, respectively. |
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ISBN: | 9781424418107 1424418100 |
ISSN: | 2381-3555 2691-0462 |
DOI: | 10.1109/ICICDT.2008.4567239 |