A 900-MHz, 3.5-mW, 8-bit Pipelined Subranging ADC Combining Flash ADC and TDC. - Kenichi Ohhata; Daiki Hayakawa; Kenji Sewaki; Kento Imayanagida; Kouki Ueno; Yuuki Sonoda; Kenichiro Muroya (IEEE Trans. Very Large Scale Integr. Syst., 2018)