TY - GEN
T1 - An 8b extremely area efficient threshold configuring SAR ADC with source voltage shifting technique
AU - Yoshioka, Kentaro
AU - Shikata, Akira
AU - Sekimoto, Ryota
AU - Kuroda, Tadahiro
AU - Ishikuro, Hiroki
PY - 2014/3/27
Y1 - 2014/3/27
N2 - An extremely low power and area efficient threshold configuring ADC (TC-ADC) for time interleaved ADC is proposed. The threshold configuring comparator (TCC) performs a binary search. 5b conversion is carried out by TCC with source voltage shifting technique. Additional 2b resolution is achieved by the proposed threshold interpolation (TI) technique with only 15% power overhead. Prototype ADC in 40nm CMOS occupies a core area of only 0.0038mm 2 and when calibration circuit included, 0.0058 mm2. With a supply voltage of 0.7V, the ADC achieves 7.0 ENOB with 24MS/s. Peak FoM of 9.8fJ/conv. is obtained at 0.5V supply, which is over 15x improvement compared with conventional TC-ADC.
AB - An extremely low power and area efficient threshold configuring ADC (TC-ADC) for time interleaved ADC is proposed. The threshold configuring comparator (TCC) performs a binary search. 5b conversion is carried out by TCC with source voltage shifting technique. Additional 2b resolution is achieved by the proposed threshold interpolation (TI) technique with only 15% power overhead. Prototype ADC in 40nm CMOS occupies a core area of only 0.0038mm 2 and when calibration circuit included, 0.0058 mm2. With a supply voltage of 0.7V, the ADC achieves 7.0 ENOB with 24MS/s. Peak FoM of 9.8fJ/conv. is obtained at 0.5V supply, which is over 15x improvement compared with conventional TC-ADC.
UR - http://www.scopus.com/inward/record.url?scp=84897869081&partnerID=8YFLogxK
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U2 - 10.1109/ASPDAC.2014.6742859
DO - 10.1109/ASPDAC.2014.6742859
M3 - Conference contribution
AN - SCOPUS:84897869081
SN - 9781479928163
T3 - Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC
SP - 31
EP - 32
BT - 2014 19th Asia and South Pacific Design Automation Conference, ASP-DAC 2014 - Proceedings
T2 - 2014 19th Asia and South Pacific Design Automation Conference, ASP-DAC 2014
Y2 - 20 January 2014 through 23 January 2014
ER -