Architecture of a mixed-mode electrophysiological signal acquisition interface.
This paper proposes mixed-mode architecture for the acquisition interface of electrophysiological signals. The architecture advances the analog-to-digital converter (ADC) from the second chopper signal in the conventional approach and performs the second chopper operation in the digital domain. The demanded low-pass filter (LPF) is realized with a digital type. The analog LPF in feedback path is substituted with a digital one accompanying with a digital-to-analog converter (DAC). The analog variation is decreased due to the digitization of these operations. The entire architecture is simulated with the ECG input in a behavior model of Simulink.
Department of Electrical Engineering Fu Jen Catholic University, New Taipei, Taiwan.
Ding-Lan
DL
Shen
Jyun-Min
JM
Chen
D004562:Electrocardiography; D004569:Electroencephalography; D004576:Electromyography; D005246:Feedback; D006801:Humans