4-port digital isolator based on on-chip transformer  

作　　者：Feng Zhang Ting Zhao Chunyu Ma Dongfang Pan 

机构地区：[1]University of Science and Technology of China, Hefei 233000, China [2]Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China

出　　处：《Journal of Semiconductors》2018年第11期79-82,共4页半导体学报（英文版）

摘　　要：The design and fabrication results of a 4-port digital isolator based on an on-chip transformer for galvanic isolation are presented. An ON–OFF keying modulation scheme is used to transmit the digital signal. The proposed digital isolator is fabricated by the 0.18 μm CMOS process. A test chip can achieve a 1 MHz signal bandwidth, a 40 ns propagation delay, a 35.5 mW input power and a 50 mA drive output current. The proposed digital isolator is pin-compatible, of small volume and low power replacement for the common 4-port optocoupler.The design and fabrication results of a 4-port digital isolator based on an on-chip transformer for galvanic isolation are presented. An ON–OFF keying modulation scheme is used to transmit the digital signal. The proposed digital isolator is fabricated by the 0.18 μm CMOS process. A test chip can achieve a 1 MHz signal bandwidth, a 40 ns propagation delay, a 35.5 mW input power and a 50 mA drive output current. The proposed digital isolator is pin-compatible, of small volume and low power replacement for the common 4-port optocoupler.

关 键 词：OPTOCOUPLER 4-port digital isolator on-chip transformer 

分 类 号：TM564[电气工程—电器]