A low power‐area low pass Gm‐C filter in biomedical analog front end for biosignal acquisition
Mehrnoosh Vafaei,
Ali Parhizgar,
Ebrahim Abiri
et al.
Abstract:SummaryIn this paper, a low‐power transconductor‐capacitor (Gm‐C) filter with programmable cutoff frequency is designed for electroencephalogram (EEG), electrocardiogram (ECG), and surface electromyography (sEMG) biosignals. The second‐order Butterworth low pass filter (LPF) is designed as an interface between an instrumentation amplifier (IA) and an analog‐to‐digital converter (ADC). The proposed Gm‐C filter suppresses out‐of‐band components and also plays an anti‐aliasing role. With the variable transconduct… Show more
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