Title :
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
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;
Conference_Titel :
India Conference (INDICON), 2012 Annual IEEE
Conference_Location :
Kochi
Print_ISBN :
978-1-4673-2270-6
DOI :
10.1109/INDCON.2012.6420648
