Very high-speed and high-accuracy current-steering CMOS D/A converter using a novel 3-D decoder |
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Authors: | Peiman Aliparast Nasser Nasirzadeh |
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Affiliation: | (1) Islamic AZAD University of Sofian, Sofian, Iran;(2) University of Tabriz, Tabriz, Iran;(3) SERAJ Institute of Higher Education, Tabriz, Iran |
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Abstract: | In this paper a 10-bit 1.2-GSample/s Nyquist current-steering CMOS digital-to-analog converter (DAC) is presented. Segmentation
(90%) has been used to get the best DNL and reduce glitch energy. This segmentation ratio guarantees the monotonicity. Higher
performance is achieved using a novel 3-D thermometer decoding method which reduces the area, power consumption, and the number
of control signals of the digital section. Simulation results show that the spurious-free-dynamic-range (SFDR) in Nyquist
rate is better than 65 dB for sampling frequency up to 1.2-GSample/s. The analog voltage supply is 3.3 V while the digital
part of the chip operates at only 2.4 V. Total power consumption in Nyquist rate measurement is 149 mW. The chip has been
processed in a standard 0.35 μm CMOS technology. Active area of chip is 1.97 mm2. |
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Keywords: | |
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