TY - GEN
T1 - A 12.4fJ-FoM 4-Bit Flash ADC Based on the StrongARM Architecture
AU - Almansouri, Abdullah Saud Mohammed
AU - Alturki, Abdullah
AU - Fariborzi, Hossein
AU - Salama, Khaled N.
AU - Al Attar, Talal
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2018/8/17
Y1 - 2018/8/17
N2 - This work proposes an efficient 4-bit flash ADC based on the StrongARM comparator architecture. The proposed design eliminates the need for the resistive ladder by systematically modifying the sizing of the input differential pair of each comparator. As a consequence, the area and the power consumed within the ladder is eliminated. Furthermore, a Helpee StrongARM circuit is introduced which enables operation at an input voltage below the threshold voltage of the transistor. An enhanced 1-out-of-15 decoder converts the thermometer code from the StrongARM and the Helpee StrongARM comparators into a 1-out-of-n code. The proposed 4-bit flash ADC architecture, simulated in 90nm standard CMOS technology, consumes 292 μ W at 1.6 GHz sampling frequency, has an ENOB of 3.88 and FoM of 12.4 fJ/conv.step.
AB - This work proposes an efficient 4-bit flash ADC based on the StrongARM comparator architecture. The proposed design eliminates the need for the resistive ladder by systematically modifying the sizing of the input differential pair of each comparator. As a consequence, the area and the power consumed within the ladder is eliminated. Furthermore, a Helpee StrongARM circuit is introduced which enables operation at an input voltage below the threshold voltage of the transistor. An enhanced 1-out-of-15 decoder converts the thermometer code from the StrongARM and the Helpee StrongARM comparators into a 1-out-of-n code. The proposed 4-bit flash ADC architecture, simulated in 90nm standard CMOS technology, consumes 292 μ W at 1.6 GHz sampling frequency, has an ENOB of 3.88 and FoM of 12.4 fJ/conv.step.
UR - http://hdl.handle.net/10754/630561
UR - https://ieeexplore.ieee.org/document/8430349
UR - http://www.scopus.com/inward/record.url?scp=85052528400&partnerID=8YFLogxK
U2 - 10.1109/PRIME.2018.8430349
DO - 10.1109/PRIME.2018.8430349
M3 - Conference contribution
AN - SCOPUS:85052528400
SN - 9781538653876
SP - 37
EP - 40
BT - 2018 14th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME)
PB - Institute of Electrical and Electronics Engineers (IEEE)
ER -