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- W2188870222 abstract "In this paper, two new architectures for high-speed CMOS wave-pipelined current-mode A/D converters (WP-IADCs) are proposed and analyzed. In the new WP-IADC architectures, the wave-pipelined theory is applied to both pipeline struc- tures, called full WP-IADC (FWP-IADC) and indirect transfer WP-IADC (ITWP-IADC). In the FWP-IADC, each stage uses the full current-mode wave-pipelined structure without switched-cur- rent cell circuits. In the ITWP-IADC, the switched-current cells are incorporated into the wave-pipelined stages which are divided into several sections with controlled clocks. Therefore, the proposed ITWP-IADC performs optimally in terms of speed and accuracy in the WP-IADCs. Generally, the proposed WP-IADCs have the advantages of high speed, high input frequency, high efficiency of timing usage, high clock-period flexibility in switched-current cells for precision enhancement, and reduced number of switched-current cells in the overall data path for linearity improvement. According to the theoretical analysis on the proposed WP-IADC structures, the minimum sampling clock period is proportional to the intrinsic delay of the current mirror and the increased rise/fall time in each wave-pipelined stage. The HSPICE simulation results reveal that, under Nyquist rate sampling in 8-b resolution, a sampling rate of 20 and 54 MHz can be achieved for FWP-IADC and two-section ITWP-IADC, respectively. If four wave-pipelined sections are used, the ITWP-IADC can be operated at 166 MHz at an input frequency of 8 MHz. To experimentally verify the correct function of the proposed WP-IADC structures, the proposed new architec- ture of the FWP-IADC is implemented by using 0.35- m CMOS technology. The measurement results successfully demonstrate the feasibility of wave-pipelined IADC architectures in applications of high-speed ADCs." @default.
- W2188870222 created "2016-06-24" @default.
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- W2188870222 date "2004-01-01" @default.
- W2188870222 modified "2023-09-27" @default.
- W2188870222 title "New Current-Mode Wave-Pipelined Architectures for High-Speed Analog-to-Digital Converters" @default.
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