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ADS1298+RLD_REF AND PACE

Juan Gilberto
Intellectual 325 points

Hola nuevamente.

quisiera poder contar con su ayuda. He comensado a elaborar una tarjeta con el ads1298 pero no me quedan muy claros aun unos conceptos acerca del manejo del marcapasos y el RLD_ref, me podria orientar nuevamente. adjunto una imagen de lo que llebo hasta el momento.

 

gracias.

 

 

Hello again.

I would like to have your help. I draw a card Commencing with ads1298 but not very clear to me even a few concepts about the management of pacemaker and RLD_ref I could focus again. attached a picture of what llebo far.

Thank you.

  • 0
    TI__Mastermind 43915 points

    Hi Juan,

    Could you be more specific as to what your questions are exactly regarding the RLD ref and the pacemaker circuitry?

    The PACEOUT is essentially the analog signal that is fed into the input of the ADC, gained up by a factor that you set and then gained back down by 0.4 and sent out the PACEOUT line. It is then the user's responsibility to use an external bandpass filter to pull out the frequency band of interest to determine if the pace signal is present. Generally, for PACE signals, the frequency of interest is between 500Hz and 10KHz.

    Regards,

    Tony Calabria

  • 0 in reply to Tony Calabria
    Intellectual 325 points

    buena tarde.

    me gustaria saber como calculo el nivel de voltaje necesario para el rld_ref segun el diseño que tengo, en cuanto al marcapaso estoy confundido con la frecuencia del filtro pasabanda, tiene alguna literatura en la que se hable de estas de frecuencias de trabajo del marcapaso los cuales trabajan en bpm.

    gracias por su ayuda, y pronta respuesta.

     

     

    google traductor:

    Good afternoon.

    I would like to know how to calculate the voltage level required for the design according rld_ref I have, as the pacemaker am confused with the frequency of the bandpass filter has some literature which discuss these working frequency of the pacemaker which work in bpm.

    thanks for your help and prompt response.

  • 0 in reply to Juan Gilberto
    TI__Mastermind 43915 points

    Hi Juan,

    There are two types of interest in PACE; one being the frequency of how often the pacemaker triggers and the other being the details of what the pacemaker signal looks like. The frequency of how ofter the pacemaker signal triggers is usually in bpm and you may not be interested in the higher frequencies which describe the detail of the signal itself. It sounds like that is all you are interested in. 

    I am not sure what you mean by calculate the voltage level required for the design. The rld_ref line is used to set the voltage level for the non-inverting input of the RLD amplifier.

    -Tony