Title :
High CMRR instrumentation amplifier for biomedical applications
Author :
Chow, Hwang-Cherng ; Wang, Jia-Yu
Author_Institution :
Dept. & Grad. Inst. of Electron. Eng., Chang Gung Univ., Taoyuan
Abstract :
A new low-voltage single-power high CMRR and PSRR instrumentation amplifier is developed for biomedical applications. The proposed circuit uses a new structure to solve the conventional circuitspsila problems. Under similar conditions for comparison, the simulation results show the proposed circuits have better performances than conventional circuits. Besides, we also present a level shifting circuit for biomedical applications. The overall proposed circuits by HSPICE using UMC 0.18 um CMOS technology achieve a very high CMRR up to 160 dB and PSRR up to 110 dB at 1.8 V single power supply.
Keywords :
CMOS integrated circuits; biomedical electronics; instrumentation amplifiers; CMOS technology; CMRR instrumentation amplifier; HSPICE; biomedical applications; shifting circuit; single power supply; voltage 1.8 V; 1f noise; Biomedical electronics; CMOS technology; Circuits; Differential amplifiers; Frequency; Instruments; Operational amplifiers; Resistors; Voltage;
Conference_Titel :
Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on
Conference_Location :
Sharjah
Print_ISBN :
978-1-4244-0778-1
Electronic_ISBN :
978-1-4244-1779-8
DOI :
10.1109/ISSPA.2007.4555532
