Shih-Chang Hsia Wen-Ching Lee A Very Low-Power Flash A/D Converter Based on Cmos Inverter Circuit. 107-110 2005 conf/iwsoc/2005 IWSOC http://doi.ieeecomputersociety.org/10.1109/IWSOC.2005.33 db/conf/iwsoc/iwsoc2005.html#HsiaL05