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A 12-bit 40MSPS 3.3-V 56-mW pipelined A/D convereter in 0.25-μm CMOS [convereter read converter]

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3 Author(s)
R. Lotfi ; Dept. of Electr. & Comput. Eng.,, Tehran Univ., Iran ; M. Taherzadeh-Sani ; O. Shoaei

In this paper, a very low-power high-speed high-resolution pipelined analog-to-digital converter (ADC) based on an optimization methodology previously proposed by the authors, is presented. By expressing the total static power consumption and the total input-referred noise of the converter as function of the capacitor values and the resolutions of the converter stages, a simple optimization algorithm is employed to calculate the optimum values of these parameters, which lead to minimum power consumption while a specified noise requirement is satisfied. Design considerations and simulation results of the 12-bit 3.3V 40MS/s pipelined ADC with only 56mW consumption in a 0.25μm CMOS process, are presented. The simulated values of the SNR and SFDR are 69dB and 75dB respectively.

Published in:

Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on  (Volume:1 )

Date of Conference:

23-26 May 2004