A Novel Differential Log-Companding Amplifier for Biosignal Sensing.

	A Novel Differential Log-Companding Amplifier for Biosignal Sensing.
	Dong, Zigang; Zhou, Xiaolin; Zhang, Yuanting
刊名	JOURNAL OF SENSORS
	2016
英文摘要	We proposed a new method for designing the CMOS differential log-companding amplifier which achieves significant improvements in linearity, common-mode rejection ratio (CMRR), and output range. With the new nonlinear function used in the log-companding technology, this proposed amplifier has a very small total harmonic distortion (THD) and simultaneously a wide output current range. Furthermore, a differential structure with conventionally symmetrical configuration has been adopted in this novel method in order to obtain a high CMRR. Because all transistors in this amplifier operate in the weak inversion, the supply voltage and the total power consumption are significantly reduced. The novel log-companding amplifier was designed using a 0.18 mu m CMOS technology. Improvements in THD, output current range, noise, and CMRR are verified using simulation data. The proposed amplifier operates from a 0.8 V supply voltage, shows a 6.3 mu A maximum output current range, and has a 6 mu W power consumption. The THD is less than 0.03%, the CMRR of this circuit is 74 dB, and the input referred current noise density is 166.1 fA/ root Hz. This new method is suitable for biomedical applications such as electrocardiogram (ECG) signal acquisition.
收录类别	SCI
原文出处	https://www.hindawi.com/journals/js/2016/5358963/abs/
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/10403]
专题	深圳先进技术研究院_医工所
作者单位	JOURNAL OF SENSORS
推荐引用方式 GB/T 7714	Dong, Zigang,Zhou, Xiaolin,Zhang, Yuanting. A Novel Differential Log-Companding Amplifier for Biosignal Sensing.[J]. JOURNAL OF SENSORS,2016.
APA	Dong, Zigang,Zhou, Xiaolin,&Zhang, Yuanting.(2016).A Novel Differential Log-Companding Amplifier for Biosignal Sensing..JOURNAL OF SENSORS.
MLA	Dong, Zigang,et al."A Novel Differential Log-Companding Amplifier for Biosignal Sensing.".JOURNAL OF SENSORS (2016).