• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 46 subscribers
  • Views 358 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS1298 EVM

umamaheswar peta
Expert 1370 points
Other Parts Discussed in Thread: ADS1298

Hi,

We are evaluating the ADS1298 EVM and when we are giving input signal 4 channel by connecting to 2 arms and 2 limbs and we shutdown all other channels the output waveform we are getting are too noisy.Attached Wave forms FYR.

And we are getting good o/p wave forms without noise when checking with flickr ECG simulator.

Please help how to reduce noise.

Rgds,

Uma MaheshFECG_Screenshot.docx

  • 0
    TI__Mastermind 38745 points
    Hello Uma,

    I'm required to tell you that the ADS1298ECG-FE is intended for electrical evaluation of the features of the ADS1298 in a laboratory, simulation, or development environment, that the ADS1289ECG-FE is not intended for direct interface with a patient, patient diagnostics, or with a defibrillator, and that the ADS1298ECG-FE is intended for development purposes only and is not intended to be used as all or part of an end equipment application.

    That being said, the human body is essentially a large antenna that picks up all kinds of noise from the environment. If that noise is in band to the anti-aliasing filter that exists on the EVM in front of the input to the device, then it will appear at the output. The right-leg drive amplifier can be utilized to drive the patient common mode. It may be configured to drive either the mid-supply voltage or a user-configured combination of inputs on to the patient which should eliminate some of the patient noise.

    Regards,
    Brian Pisani
  • 0 in reply to Brian Pisani
    Expert 1370 points
    Hi Brain,

    Thks for your reply.

    Rgds,
    UmaMahesh