A high CMRR analog front-end IC for wearable physiological monitoring

Author

Kumar, Dwivedi Sanjeet ; Safeer, K.P. ; Pandian, P.S. ; Padaki, V.C. ; Kumar, Dwivedi Sanjeet ; Kumar, Manoj ; Sastry, C.V.S.

Author_Institution

Defence Bioeng. & Electromed. Lab. (DEBEL), Defence R&D Organ., Bangalore, India

fYear

2012

fDate

7-9 Dec. 2012

Firstpage

385

Lastpage

388

Abstract

This paper presents a High Common Mode Rejection Ratio(CMRR) Instrumentation Amplifier(IA) with Driven Right Leg(DRL) circuitry for Electrocardiogram(ECG) signal acquisition. The circuit is based on the current feedback topology. The high pass and lowpass filters are integrated into the IA. DRL is implemented to minimise the common mode noise. The present design is fabricated at UMC on 0.18μm CMOS process technology. The measured CMRR of the circuit is 122dB. The bandwidth of the amplifier is 0.05-125Hz. The integrated input referred noise is 2.3μV. the ICMR is 0-1.65V and the dynamic range is ±4.5mV. The power of the total circuit(IA+DRL) is 132μW with a 3.3V supply. The instrumentation amplifier is tested with simulators and patients also.

Keywords

CMOS analogue integrated circuits; biomedical electronics; electrocardiography; feedback amplifiers; high-pass filters; instrumentation amplifiers; integrated circuit design; integrated circuit noise; low-pass filters; medical signal detection; medical signal processing; patient monitoring; CMOS process technology; DRL; ECG; IA; UMC; amplifier bandwidth; bandwidth 0.05 Hz to 125 Hz; common mode noise; current feedback topology; driven right leg circuitry; electrocardiogram signal acquisition; high CMRR analog front-end IC; high common mode rejection ratio instrumentation amplifier; high pass filters; integrated input referred noise; lowpass filters; power 132 muW; size 0.18 mum; voltage 3.3 V; wearable physiological monitoring; Biomedical monitoring; Electrocardiography; Instruments; Monitoring; Noise; Resistors; Transistors; CMRR; DRL; ECG; IA; Noise;

fLanguage

English

Publisher

ieee

Conference_Titel

India Conference (INDICON), 2012 Annual IEEE

Conference_Location

Kochi

Print_ISBN

978-1-4673-2270-6

Type

conf

DOI

10.1109/INDCON.2012.6420648

Filename

6420648