TY - GEN
T1 - A 10.5-b ENOB 645 nW 100kS/s SAR ADC with statistical estimation based noise reduction
AU - Chen, Long
AU - Tang, Xiyuan
AU - Sanyal, Arindam
AU - Yoon, Yeonam
AU - Cong, Jie
AU - Sun, Nan
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/11/25
Y1 - 2015/11/25
N2 - This paper presents a power-efficient SNR enhancement technique for SAR ADCs. By accurately estimating the conversion residue, it can suppress both comparator noise and quantization error. Thus, it allows the use of a noisy low-power comparator and a relatively low resolution DAC to achieve high resolution. The proposed technique has low hardware complexity, requiring no change to the standard ADC operation except for repeating the LSB comparisons. A prototype ADC is designed in 65nm CMOS. Its SNR is improved by 7dB with the proposed technique. Overall, it achieves 10.5-b ENOB while operating at 100kS/s and consuming 645nW from a 0.7V power supply.
AB - This paper presents a power-efficient SNR enhancement technique for SAR ADCs. By accurately estimating the conversion residue, it can suppress both comparator noise and quantization error. Thus, it allows the use of a noisy low-power comparator and a relatively low resolution DAC to achieve high resolution. The proposed technique has low hardware complexity, requiring no change to the standard ADC operation except for repeating the LSB comparisons. A prototype ADC is designed in 65nm CMOS. Its SNR is improved by 7dB with the proposed technique. Overall, it achieves 10.5-b ENOB while operating at 100kS/s and consuming 645nW from a 0.7V power supply.
UR - http://www.scopus.com/inward/record.url?scp=84959230886&partnerID=8YFLogxK
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U2 - 10.1109/CICC.2015.7338493
DO - 10.1109/CICC.2015.7338493
M3 - Conference contribution
AN - SCOPUS:84959230886
T3 - Proceedings of the Custom Integrated Circuits Conference
BT - 2015 IEEE Custom Integrated Circuits Conference, CICC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE Custom Integrated Circuits Conference, CICC 2015
Y2 - 28 September 2015 through 30 September 2015
ER -