An OTA-C filter for ECG acquisition systems with highly linear range and less passband attenuation

Jihai Duan, Chuang Lan, Weilin Xu, Baolin Wei

doi: 10.1088/1674-4926/36/5/055006

key words: ECG signal, fully differential OTA-C filter, highly linear range, less passband attenuation

Demonstration of a fully differential VGA chip with small THD for ECG acquisition system

Gongli Xiao, Yuliang Qin, Weilin Xu, Baolin Wei, Jihai Duan, Xueming Wei

doi: 10.1088/1674-4926/36/10/105005

key words: fully differential VGA, total harmonic distortion, ECG acquisition system, capacitive feedback

An extremely low power voltage reference with high PSRR for power-aware ASICs

Jihai Duan, Dongyu Deng, Weilin Xu, Baolin Wei

doi: 10.1088/1674-4926/36/9/095006

key words: ASICs, extremely low power dissipation, high power supply rejection ratio, voltage reference source

Low-noise sub-harmonic injection locked multiloop ring oscillator

Weilin Xu, Di Wu, Xueming Wei, Baolin Wei, Jihai Duan, Fadi Gui

doi: 10.1088/1674-4926/37/9/095004

key words: ring VCO, injection-locked, multiloop, frequency tuning

An 8 bit 1 MS/s SAR ADC with 7.72-ENOB

Jihai Duan, Zhiyong Zhu, Jinli Deng, Weilin Xu

doi: 10.1088/1674-4926/38/8/085005

key words: SAR ADC, dynamic latch comparator, output offset voltage storage technology, kickback noise