A highly linear voltage controlled resistor for neural chip. - Sung Dae Lee; Won Hyo Lee; Kang-Min Chung (SMC, 1998)

A High Speed and Low Power Phase-Frequency Detector and Charge - pump. - Won Hyo Lee; Jun Dong Cho; Sung Dae Lee (ASP-DAC, 1999)

An On-Chip Automatic Tuning Circuit using Integration Level Approximation. - Sung Dae Lee; Myungjun Jang; Won Hyo Lee (ASP-DAC, 1999)