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ADS1292R: ADS1292R is functional when it is connected to an ECG simulator, but it won't work when it is connected to a human body

user6051691
Prodigy 10 points
Part Number: ADS1292R

I used an ECG simulator. IN2P is connected to LA, IN2N is connected to RL. And this is the result I get from CH2.

But when I connect to a human body, the result is:

It doesn't even have any noise... I can't see why.

  • 0
    TI__Mastermind 49926 points

    Hi,

    Based on your schematics, we do not recommend connecting channel 2 to the human body because there are no patient protection resistors and antialiasing filters.

    When you ran the tests, how did you connect the channel or electrodes to the body?  How did you set the bias voltage to the body?

    Please ensure that the input common mode range of the front end is not violated.

    Refer to section 8.3.4.1 in the datasheet for the usable input common-mode range for your configuration.