A back-illuminated global-shutter CMOS image sensor with pixel-parallel 14b subthreshold ADC. - Masaki Sakakibara; Koji Ogawa; Shin Sakai; Yasuhisa Tochigi; Katsumi Honda; Hidekazu Kikuchi; Takuya Wada; Yasunobu Kamikubo; Tsukasa Miura; Masahiko Nakamizo; Naoki Jyo; Ryo Hayashibara; et al. (ISSCC, 2018)