A low power sample-and-hold amplifier. - Hitoshi Tani; Yoshihisa Fujimoto; Masahiko Maruyama; Hiroyuki Akada; Hiroaki Ogawa; Masayuki Miyamoto (ESSCIRC, 2003)

A delta-sigma modulator for 1-bit digital switching amplifier [audio power amplifier]. - Pascal Lo Ré; Yoshihisa Fujimoto; Hitoshi Tani; Masayuki Miyamoto (CICC, 2004)

A low-power switched-capacitor variable gain amplifier. - Yoshihisa Fujimoto; Hitoshi Tani; Masahiko Maruyama; Hiroyuki Akada; Hiroaki Ogawa; Masayuki Miyamoto (IEEE J. Solid State Circuits, 2004)