Title
A 0.9V 12-bit 200-kS/s 1.07µW SAR ADC with ladder-based reconfigurable time-domain comparator
Abstract
This paper presents a SAR ADC for biomedical application, which has a strict limit on its power consumption. Thus, two techniques are introduced into its design: a novel ladder-based reconfigurable time domain (RTD) comparator is proposed to reduce the noise and to adjust power according to inputs automatically; and a novel clock distribution circuit is utilized to save more than 55% power consumption. The prototype chip is designed and fabricated in UMC 0.18μm technology. The simulation results show that with supply voltage of 0.9V, the ADC consumes 1.07μW at the sampling rate of 200kS/s. And the SNDR is 71.2 dB with 3.24kHz input sinusoid signal, showing the corresponding figure-of-merit of 1.8 fJ /conversion-step.
Year
DOI
Venue
2014
10.1109/MWSCAS.2014.6908363
Circuits and Systems
Keywords
Field
DocType
analogue-digital conversion,clock distribution networks,comparators (circuits),time-domain analysis,frequency 3.24 khz,power 1.07 muw,size 0.18 mum,voltage 0.9 v,reconfigurable time-domian comparator,sar adc,biomedical,formatting
Time domain,Comparator,Computer science,12-bit,Electronic engineering,Flash ADC,Successive approximation ADC
Conference
ISSN
Citations 
PageRank 
1548-3746
1
0.41
References 
Authors
3
6
Name
Order
Citations
PageRank
Xiaolin Yang112.78
Yin Zhou240.87
Menglian Zhao3166.31
zhongyi huang410.75
Lin Deng541.31
Xiaobo Wu656.74