Low-Noise Low-Pass Filter for ECG Portable Detection Systems with Digitally Programmable Range

被引：0
作者：
Soliman A. Mahmoud
Ahmed Bamakhramah
Saeed A. Al-Tunaiji
机构：
[1] Sharjah University,Electrical and Computer Engineering Department
[2] Fayoum University,Electrical Engineering Department
来源：
Circuits, Systems, and Signal Processing | 2013年 / 32卷
关键词：
ECG; OTA-C filters; Low-voltage low-power CMOS circuits; Low-frequency filters;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This paper presents the design of an operational transconductance amplifier-C (OTA-C) low-pass filter for a portable Electrocardiogram (ECG) detection system. A fifth-order Butterworth filter using ladder topology is utilized to reduce the effect of component tolerance and to provide a maximally flat response. The proposed filter is based on a novel class AB digitally programmable fully differential OTA circuit. Based on this, PSPICE simulation results for the filter using 0.25-μm technology and operating under ±0.8 V voltage supply are also given. The filter provides a third harmonic distortion (HD3) of 53.5 dB for 100 mV p-p @50 Hz sinusoidal input, input referred noise spectral density of [inline-graphic not available: see fulltext], total power consumption of 30 μW, and a bandwidth of 243 Hz. These results demonstrate the ability of the filter to be used for ECG signal filtering that is located within 150 Hz.
引用
收藏
页码：2029 / 2045
页数：16
相关论文
共 33 条
[1]  
Alzaher H.(2003)A CMOS fully balanced second-generation current conveyor IEEE Trans. Circuits Syst. II 50 278-287
[2]  
Elwan H.(2000)A CMOS digitally programmable class AB OTA circuit IEEE Trans. Circuits Syst. II 47 1551-1556
[3]  
Ismail M.(2010)New CMOS DVCC realization and applications to instrumentation amplifier and active RC filters AEÜ, Int. J. Electron. Commun. 64 47-55
[4]  
Elwan H.(2009)Systematic design and modeling of a OTA-C filter for portable ECG detection IEEE Trans. Biomed. Circuits Syst. 3 53-64
[5]  
Ismail M.(2005)Fully differential CMOS current feedback operational amplifier Analog Integr. Circuits Signal Process. 43 61-69
[6]  
Hassan T.(1997)A CMOS programmable balanced output transconductor for analog signal processing Int. J. Electron. 82 p605-620
[7]  
Mahmoud S.(1999)New CMOS fully differential difference transconductors and application to fully differential filters suitable for VLSI Microelectron. J. 30 169-192
[8]  
Lee S.(1999)New MOS-C biquad filter using the current feedback operational amplifier IEEE Trans. Circuits Syst. I 26 1431-1440
[9]  
Cheng C.(2005)A CMOS analog front-end IC for portable EEG/ECG monitoring applications IEEE Trans. Circuits Syst. I 52 2335-2347
[10]  
Mahmoud S.(2004)A 1.25-V micropower Gm-C filter based on FGMOS transistors operating in weak inversion IEEE J. Solid-State Circuits 39 100-111
1234