Kentaro Yoshioka, Akira Shikata, Ryota Sekimoto, Tadahiro Kuroda, and Hiroki Ishikuro, "An 8bit .8V MS/s 2bit/step SAR ADC with Wide Range Threshold Configuring Comparator" at 38th European Solid-State Circuits Conference (ESSCIRC), Bordeaux, France, Sept. 17-21, 2012.