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ADS1299 Development kit

Robert C
Prodigy 40 points

Other Parts Discussed in Thread: ADS1299

Hello!

I am presently in the process of ordering an ADS1299 development kit for assessing the viability of this product for a new bio-feedback design.

I have a few questions first:

Do you recommend any particular electrodes for use with this? Is there a manufacturer (or even TI) that can supply an electrode set that

will interface to the ADS1299 daughter-board? Or perhaps a breakout board that may simplify the attachment of electrodes?

I am slightly unclear about this: If the maximum gain from the PGA on-board the ADS1299 is only 25,  will it be required to have an intermediary pre-amp between

the patient/electrode interface and the ADS1299 board? Another possibility I've been considering is using high-input-Z buffers right at the scalp of the patient

so as to have an 'active' electrode, possibly even with additional gain. How could this potentially impact my signal chain in terms of signal distortion, and noise if I

choose to go this route?

If you could offer some suggestions relevant to my situation, or point me in the direction of further information; that would be most appreciated.

Thank you

Robert C.

  • 0
    TI__Mastermind 43915 points

    Hi Robert,

    I am not sure how much help I can be here (hopefully someone else on the forum can help out).

     We have not tested the chip with electrodes and a patient as we are not in the market for end equipment. A gain of 24 with the noise numbers on the device should be plenty of resolution. Customers we have worked closely with have been happy with the gain options and have not required an additional gain stage. The daughter card is meant to be evaluated and was not designed to be connected to a patient. We did not include any patient protection circuitry.

    Regards,

    Tony Calabria