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adas1000 real-time impedance measurement

Question asked by medica on Dec 2, 2015
Latest reply on Dec 9, 2015 by Padraic

I have an ADAS1000 evaluation board and I was hoping to acquire raw ECG signal with AC lead-off enabled, in frequency range that allows capturing both, ECG signal and sinusoid at carrier frequency at 2.039 kHz. However, it seem impossible to turn off internal digital low-pass filters which pass only part of the signal below 450Hz. Can you help me with this? My intention is to measure spectrum amplitude change at 2039Hz with refresh rate of at least 50Hz, in order to obtain real-time estimate of impedance trend.