A 1V 0.54µW fourth order switched capacitor filter with switched opamp technique for cardiac pacemaker sensing channel. - Jen-Shiun Chiang; Hsueh-Ping Chen; Cheng-Ming Ying (ISCAS (1), 2003)

A dual-slope phase frequency detector and charge pump architecture to achieve fast locking of phase-locked loop. - Kuo-Hsing Cheng; Wei-Bin Yang; Cheng-Ming Ying (IEEE Trans. Circuits Syst. II Express Briefs, 2003)