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Proceedings Paper

A simple 3.8-mW 300-MHz 4-bit flash analog-to-digital converter
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Paper Abstract

This paper presents a fully differential comparator that can be used in a N bit Flash A/D converter as continuous-time sigma-delta modulator quantizer. The comparator is an extension of the dynamic comparator presented by Lewis and Gray, resulting in a 4 bit A/D. Its main advantages are : compact architecture based on MOS transistor only, without any passive components such as resistance ladder or switch capacitance, fully differential input and output voltages, operating at very low voltage. Using this comparator, a 4 bit flash A/D converter has been designed in a 0.13μm CMOS technology, under 1.2V supply voltage. It operates at 300Msample/s, suitable for over sampled data converter. The simulation shows a 3.8mW power consumption for the whole ADC.

Paper Details

Date Published: 30 June 2005
PDF: 8 pages
Proc. SPIE 5837, VLSI Circuits and Systems II, (30 June 2005); doi: 10.1117/12.608343
Show Author Affiliations
Laurent de Lamarre, LIP6-UPMC (France)
Marie-Minerve Louerat, LIP6-UPMC (France)
Andreas Kaiser, IEMN-ISEN CNRS (France)


Published in SPIE Proceedings Vol. 5837:
VLSI Circuits and Systems II
Jose Fco. Lopez; Francisco V. Fernandez; Jose Maria Lopez-Villegas; Jose M. de la Rosa, Editor(s)

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