Title :
A high performance current-mode instrumentation amplifier for biomedical applications
Author :
Chow, Hwang-Cherng ; Tang, Bing-Shiun ; Tien, Ji-Hong ; Feng, Wu-Shiung
Author_Institution :
Grad. Inst. of Electron. Eng., Chang Gung Univ., Taoyuan, Taiwan
Abstract :
In this paper, a high performance current-mode instrumentation amplifier has been proposed for low noise, low power, high CMRR and adjustable gain with an external resistor for various biomedical signal processing. Based on post-layout simulation results, the proposed current-mode amplifier achieves an overall gain of 84.2 dB (PMOS type) 92.5dB (BJT type), input-referred noise of 107.7443n V√Hz (PMOS type) 54.9401n V√Hz (BJT type), CMRR of 125.3 dB (PMOS type)121.8dB (BJT type), power consumption of 61.5043 uW (PMOS type)65.6571 uW (BJT type) at a 1.8-V supply using a standard 0.18-um CMOS technology.
Keywords :
CMOS integrated circuits; current-mode circuits; low noise amplifiers; low-power electronics; medical signal processing; resistors; BJT; CMRR; PMOS type; biomedical applications; biomedical signal processing; current-mode amplifier; current-mode instrumentation amplifier; external resistor; gain 84.2 dB; gain 92.5 dB; power 61.5043 muW; power 65.6571 muW; size 0.18 mum; voltage 1.8 V; CMOS integrated circuits; Electrocardiography; Gain; Instruments; Noise; Simulation; Transistors; adjusting gain; biomedical signal; high CMRR; instrumentation amplifier; low power;
Conference_Titel :
Signal Processing Systems (ICSPS), 2010 2nd International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-6892-8
Electronic_ISBN :
978-1-4244-6893-5
DOI :
10.1109/ICSPS.2010.5555222
