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An ultra-energy-efficient wide-bandwidth video pipeline ADC using optimized architectural partitioning

Adeniran, OA; Demosthenous, A; (2006) An ultra-energy-efficient wide-bandwidth video pipeline ADC using optimized architectural partitioning. IEEE T CIRCUITS-I , 53 (12) 2485 - 2497. 10.1109/TCSI.2006.885983.

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Abstract

The classical pipeline analog-to-digital converter (ADC) architecture is analyzed to determine optimal partitioning for high effective resolution bandwidth (ERBW) and low-power consumption at reduced supply voltages. It is found that multibit inter-stage partitioning, in particular 2.5 bits per stage, is optimum for the reduction of power consumption in subsampling video ADCs for mobile/handheld receivers. To validate the analysis, a 1.5-V, 10-bit pipeline ADC for the digital video broadcast-handheld application was realized in a standard 3.3-V, 0.35-mu m CMOS technology, with 2.5-2.5-2.5-4 partitioning employed. At the target sampling rate of 20.48 MS/s, measured results show that the converter achieves 56-dB SNR, 60-dB spurious-free dynamic range, 100-MHz ERBW and a power consumption of 19.5 mW. Energy consumption per conversion is only 0.19 pJ, making it the most energy-efficient 10-bit video-rate pipeline ADC reported to date.

Type: Article
Title: An ultra-energy-efficient wide-bandwidth video pipeline ADC using optimized architectural partitioning
DOI: 10.1109/TCSI.2006.885983
Keywords: analog-to-digital conversion, digital video broadcast-handheld (DVB-H)), effective resolution bandwidth (ERBW), low-voltage circuits, pipeline analog-to-digital converter (ADC), power-efficient ADC, TO-DIGITAL CONVERTER, CMOS A/D-CONVERTER, DESIGN TECHNIQUES, HIGH-SPEED, 10-BIT, PERFORMANCE, INPUT, SFDR
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/155421
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