A rail-to-rail ping-pong op-amp. - Ion E. Opris; Gregory T. A. Kovacs (IEEE J. Solid State Circuits, 1996)

A high-speed median circuit. - Ion E. Opris; Gregory T. A. Kovacs (IEEE J. Solid State Circuits, 1997)

Bootstrapped pad protection structure. - Ion E. Opris (IEEE J. Solid State Circuits, 1998)

A single-ended 12-bit 20 Msample/s self-calibrating pipeline A/D converter. - Ion E. Opris; Laurence D. Lewicki; Bill C. Wong (IEEE J. Solid State Circuits, 1998)

A pipeline A/D converter architecture with low DNL. - Ion E. Opris; Bill C. Wong; Sing W. Chin (IEEE J. Solid State Circuits, 2000)

A Fast Analog Front-End Processor for Digital Imaging Systems. - Ion E. Opris; Seiichiro Watanabe (IEEE Micro, 2001)