A Novel Low Power Consumption and Quasilinear CMOS Optically Coupled Isolation Amplifier

摘要：

A kind of novel CMOS optically coupled isolation amplifier (OCIA) composed of two operational amplifiers (OAs) is present To improve the linearity and reduce the power consumption, the negative feedback signal is introduced to the input loop through two photoelectric coupled devices. Besides, other improvement actions are taken in this amplifier. Experimental results show that compared with the BiCMOS OCIA, the ±3 dB bandwidth of this amplifier increases about 14 kHz, the power consumption (PD) reduces 5.46 mW, and the gain linearity increases to 5.9*10 . Its delay-power product is about 25.7 nJ, far lower than that of BiCMOS. So this amplifier is very suitable for high-linearity, low power consumption photoelectric signal processing and intelligent detecting systems.

关键词： CMOS devices optically coupled isolation amplifiers linearity law power consumption

作者: Li Cheng Ning Yang Xiaodi Zhou Ming Yan

作者单位: School of Electrical and Information Jiangsu University Zhenjiang, China

会议类型: 国际会议

会议名称: 2010 International Conference on Computer,Mechatronics,Control and Electronic Engineering(2010计算机、机电、控制与电子工程国际会议 CMCE 2010)

会议地点: 长春

会议语种:英文

页码: 175-178

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）