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Documents Why MAX30001/ECG signal input should be matched?
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  • MAX30001CTI+: FAQ
  • -MAX30001CTI+T: FAQ
    • Can I miss to connect 1nF shunt-cap connected to CPLL of MAX30001 but directly connected CPLL to GND?
    • Does ECG/EKG feature required FDA certification approval?
    • Does the phase offset (BIOZ_PHOFF setting in MAX30001) impact overall performance (noise, in particular) in any way?
    • For MAX30001 what is the equation that relates BioZ (impedance) to the ADC output in the BioZ FIFO?
    • How could the MAX30001 AFE also be used to measure hydration?
    • How do I ensure that the ECG signals couple the same common node noise?
    • How do I optimize Maxim ECG AFE registers?
    • If there is a non-negligible parasitic capacitance to GND(~100pF) on dry electrodes before the EMI filters, are there any pressing concerns with this level of capacitance on the electrodes for both ECG and BIOZ?
    • In the MAX30001 BIOZ channel, what is the phase relationship between the Demodulator Signal and the Drive Current signal?
    • Is it possible to shift electrodes to the human body backside to measure ECG signals ?
    • Is there any reliable method, without using a different FCLK, to increase the BIOZ sampling rate to about 100Hz?
    • Should I split AGND and DGND in the MAX30001?
    • Should I use MAX30001 or MAX86150 as ECG AFE for DRY ELECTRODES?
    • What are the effects of each of the BMUX_CG_MODE settings, and should we be using the resistive CM setting (0b11) when biasing using the internal resistors?
    • What are the leads of ECG?
    • What are the voltage amplitudes for a human ECG?
    • What is a Holter Monitor?
    • What is HRV (Heart Rate Variability)?
    • What is pulse transit time (PTT)?
    • What is the dynamic range of MAX3000x ECG device?
    • What is the maximum impedance the MAX30001 can measure?
    • What MAX30001/MAX30003 register settings will eliminate the motion artifacts?
    • What type of capacitors are recommended for use with the MAX30001 to minimize the noise?
    • What would be a good algorithm to measure heart rate in a noisy environment with a lot of artifacts?
    • What's the frequency range of ECG analyzer made for China?
    • When will the MAX30001CTI+ (28 TQFN pkg) be available?
    • Why MAX30001/ECG signal input should be matched?
    • Why most Maxim's reference designs for ECG application have driving electrodes (Right leg drive)?
    • Why we need to connect a 1uF capacitor between CAPP and CAPN in MAX30001 design?
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Why MAX30001/ECG signal input should be matched?

When the input load is matched, the CMRR can be up to 115dB and above.

But when the input load is not matched, the MCRR will be lower to 75dB.

So the input load should be matched to decrease the external noise sesusceptibility.

 

Tags: MAX30001CTI+ ecg KA-06420 MAX30001
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