Title
A 6-Bit 50-MS/s Threshold Configuring SAR ADC in 90-nm Digital CMOS
Abstract
A successive approximation analog-to-digital converter (ADC) architecture is presented that programs its comparator threshold at runtime to approximate the input signal via binary search. While targeting medium resolutions and speed, the threshold configuring (TC) ADC achieves low power consumption and small area occupation by using a fully dynamic configurable comparator and an asynchronous controller, with no need for a highly linear feedback D/A converter. The TC-ADC embeds its own references, and relies on a minimal amount of passive components or calibration loops. A 6-bit prototype implementation in 90-nm digital CMOS technology achieves 32-dB SNDR at 50 MS/s and consumes 240 μW from 1-V analog and 0.7-V digital supplies. This results in 150 fJ/conversion-step in a core area occupation of only 0.0055 mm .
Year
DOI
Venue
2012
10.1109/TCSI.2011.2161368
Circuits and Systems I: Regular Papers, IEEE Transactions
Keywords
Field
DocType
analog-to-digital converter architecture,fully dynamic configurable comparator,medium resolutions,low power consumption,word length 6 bit,analogue-digital conversion,digital cmos technology,asynchronous controller,comparators,successive approximation register,power 240 muw,threshold configurable comparator,configurable circuits,asynchronous logic circuits,sar adc,successive approximation,voltage 1 v,low-power analog integrated circuits,binary search,size 90 nm,passive components,comparators (circuits),cmos digital integrated circuits,comparator threshold,threshold programmable circuits,threshold configuring sar adc,voltage 0.7 v,analog-to-digital conversion,capacitors,cmos integrated circuits,capacitance,threshold voltage
Control theory,Comparator,Capacitor,Computer science,CMOS,Electronic engineering,Binary search algorithm,Successive approximation ADC,Electronic component,Threshold voltage
Journal
Volume
Issue
ISSN
59
1
1549-8328
ISBN
Citations 
PageRank 
978-4-86348-001-8
20
1.43
References 
Authors
20
6
Name
Order
Citations
PageRank
Pierluigi Nuzzo130533.35
Claudio Nani2495.65
Costantino Armiento3201.43
Alberto L. Sangiovanni-Vincentelli4113851881.40
Jan Craninckx5756181.43
G. Van der Plas632835.68