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ADS1299: EEG Biolar mode lead off detection register configuration

Wei Ken Ting
Prodigy 210 points
Part Number: ADS1299

Tool/software:

Dear TI team ,

EEG have bipolar and unipolar measure mode in actual use.

Refer as below is hardware bipolar mode 4 channel connection and 5 input electrode.  

How to setup bipolar mode lead off register to implement 5 electrode lead on/off detection function ?

  • +1
    TI__Guru 66186 points

    Hello Wei,

    Thank you for your post.

    You can still use the same LOFF_SENSP/N register bits to enable DC lead-off detection on each individual electrode. For the electrodes which are shared between two channel inputs, you only need to enable lead-off detection on one connection. For example, if the electrode is connected to IN1N and IN2P, you can enable LOFF just for IN1N only.

    Regards,

    Ryan