A 6-bit, 0.2V To 0.9V Highly Digital Flash ADC With Comparator Redundancy

Daly D. C., A. P. Chandrakasan, "A 6-bit, 0.2V to 0.9V Highly Digital Flash ADC With Comparator Redundancy," IEEE Journal of Solid-State Circuits, vol. 44, no. 11, pp. 3030-3038, November 2009.