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ADS1293EVM: 5 lead Application

Renan Santos Adriano
Mastermind 22220 points
Part Number: ADS1293EVM

Tool/software:

Hello Team,

Posting on behalf of my customer:

I am looking forward for a 5 lead ecg setup. Generally we take reading from InA's as LA-RA. But I want a result like only value of LA. That means i need to make value of RA to zero. Hence LA-0=LA. I am thinking to attach RA lead to zero voltage. But i saw an option like disconnect leads in channels. So i want to know if i disconnect RA that is negative electrode of InA will i get value of RA as zero , so that i get required result that is value of LA.
Regards,
Renan
  • 0
    TI__Guru 66186 points

    Hi Renan,

    Can you please share the customer name?

    For best performance, all electrodes should be measured against an input with the same common-mode voltage and noise. Normally this means measuring a differential pair of electrodes, such that the common-mode signals cancel. In this case, I would recommend routing the RLDOUT signal to the desired INx pin and use that same signal as the negative electrode to the INA. 

    Regards,

    Ryan