Title
A 550- 10-b 40-MS/s SAR ADC With Multistep Addition-Only Digital Error Correction
Abstract
A speed-enhanced 10-b asynchronous SAR ADC with multistep addition-only digital error correction (ADEC) is presented with a straightforward DAC switching algorithm. The capacitor DAC is virtually divided into three sub-DACs for ADEC with negligible hardware overhead. The redundant decision cycles between stages reconfigure the capacitor connection of the DAC. These redundancies guarantee 10-b linearity under 4-b-accurate DAC settling in the MSB decision and the optimally designed ADC enhances the conversion speed by 37%. A prototype ADC was implemented in a CMOS 0.13-μm technology. The chip consumes 550 μW and achieves a 50.6-dB SNDR at 40 MS/s under a 1.2-V supply. The figure-of-merit (FOM) is 50 fJ/conversion-step.
Year
DOI
Venue
2011
10.1109/JSSC.2011.2151450
Solid-State Circuits, IEEE Journal of
Keywords
Field
DocType
CMOS integrated circuits,analogue-digital conversion,capacitors,digital-analogue conversion,error correction,redundancy,CMOS technology,DAC switching algorithm,MSB decision,multistep addition only digital error correction,power 550 muW,redundant decision cycle,size 0.13 mum,speed enhanced asynchronous SAR ADC,voltage 1.2 V,word length 10 bit,Addition-only digital error correction (ADEC),SAR ADC,asynchronous,digital error correction,multistep binary error correction
Asynchronous communication,Computer science,Linearity,CMOS,Electronic engineering,Chip,Error detection and correction,Redundancy (engineering),Successive approximation ADC,Least significant bit
Journal
Volume
Issue
ISSN
46
8
0018-9200
ISBN
Citations 
PageRank 
978-1-4244-5758-8
10
1.06
References 
Authors
8
4
Name
Order
Citations
PageRank
Sang-Hyun Cho114321.38
Chang-Kyo Lee2284.02
Jong-Kee Kwon315823.10
Seung-Tak Ryu429946.61