I have a question AD8233.


In AD8233 Datasheet , +IN is to be connected to LA and -IN is to be connected to RA.
The customer wants to connect RA to + IN and LA to - IN.
Do you have any risks if you do this kind of usage?

Also, please also tell me why + IN is specifying LA, -IN is connecting to RA on the datasheet.



Best Regards


  • 0
    •  Analog Employees 
    on Mar 16, 2018 1:11 AM

    Hi HOD,

    I believe this polarity is dictated by the ECG leads that require a positive and negative electrodes(bipolarity) for monitoring. This type of leads typically comparing the left arm (as positive) to the right arm's electrode (as negative). This means that any current flowing to the left produces a positive deflection on the ECG while any current flowing to the right produces a negative deflection. There are other connections but it seems that the right arm is usually connected to the  negative of the bipolar leads of the ECG.

    Best regards,