TY - GEN
T1 - Edge pursuit comparator with application in a 74.1dB SNDR, 20KS/s 15b SAR ADC
AU - Shim, Minseob
AU - Jeong, Seokhyeon
AU - Myers, Paul
AU - Bang, Suyoung
AU - Shen, Junhua
AU - Kim, Chulwoo
AU - Sylvester, Dennis
AU - Blaauw, David
AU - Jung, Wanyeong
N1 - Funding Information:
The authors thank TSMC University Shuttle Program for chip fabrication and Analog Devices for partial financial support.
Publisher Copyright:
© 2018 IEEE.
PY - 2018/2/20
Y1 - 2018/2/20
N2 - This paper presents a new energy-efficient ring oscillator collapse-based comparator, which is called edge-pursuit comparator (EPC) and demonstrated it in a 15-bit SAR ADC. The comparator automatically adjusts the performance according to its input difference without any control, eliminating unnecessary energy spent on coarse comparisons. The employed SAR ADC supplements a 10-bit differential main CDAC with a 5-bit common-mode CDAC which uses common to differential gain tuning to improves linearity by reducing the effect of switch parasitic capacitance. A test chip fabricated in 40nm CMOS shows 74.12 dB SNDR and 173.4 dB FOMs. The comparator consumes 104 nW with the full ADC consuming 1.17 μW.
AB - This paper presents a new energy-efficient ring oscillator collapse-based comparator, which is called edge-pursuit comparator (EPC) and demonstrated it in a 15-bit SAR ADC. The comparator automatically adjusts the performance according to its input difference without any control, eliminating unnecessary energy spent on coarse comparisons. The employed SAR ADC supplements a 10-bit differential main CDAC with a 5-bit common-mode CDAC which uses common to differential gain tuning to improves linearity by reducing the effect of switch parasitic capacitance. A test chip fabricated in 40nm CMOS shows 74.12 dB SNDR and 173.4 dB FOMs. The comparator consumes 104 nW with the full ADC consuming 1.17 μW.
UR - http://www.scopus.com/inward/record.url?scp=85045349109&partnerID=8YFLogxK
U2 - 10.1109/ASPDAC.2018.8297327
DO - 10.1109/ASPDAC.2018.8297327
M3 - Conference contribution
AN - SCOPUS:85045349109
T3 - Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC
SP - 295
EP - 296
BT - ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 23rd Asia and South Pacific Design Automation Conference, ASP-DAC 2018
Y2 - 22 January 2018 through 25 January 2018
ER -