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A chopped front-end system with common-mode feedback for real time ECG applications
Gardella, Pablo Villa Fernández, Emanuel Baez, Eduardo Cesaretti, Juan Manuel
Gardella, Pablo
Villa Fernández, Emanuel
Baez, Eduardo
Cesaretti, Juan Manuel
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Ponencia en congreso
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Abstract
"A Front-End system composed of an instrumentation amplifier with common-mode feedback and a
second-order sigma-delta analog to digital converter is proposed. Chopping techniques are used to remove offset and low frequency noise to guarantee a noise floor below the signal of interest. Measurements show that common-mode feedback adds 71 dB to the CMRR at 50 Hz and the input referred noise is 1.17 μVRMS over the frequency range of 0.1 Hz to 400 Hz."
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Date
2017
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Ponencia_Gardella
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AMPLIFICADORES, CONVERTIDORES ANALOGICO-DIGITALES, PROCESAMIENTO DE SEÑALES, ELECTROCARDIOGRAFIA