Relaxation DAC with positive and negative polarity output using high-pass filter. - Lengkhang Nengvang; Shogo Katayama; Anna Kuwana; Kazufumi Naganuma; Kiyoshi Sasai; Akihisa Iikura; Akira Asao; Takuya Watanabe; Katsuaki Morishita; Haruo Kobayashi 001 (IEICE Electron. Express, 2023)