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ADS5294: Decimate By 4 Coefficients

Richard Elmquist
Mastermind 45250 points
Part Number: ADS5294

I have a customer that wants to use the ADS5294, but he has asked if we have anything that would show the filter coefficients that are used in the Decimate By 4 filter? He stated that he zoomed in on figure 49 and was not able to determine the actual coefficients. Would we have this information for the customer?

Thanks for your help with this!

Richard Elmquist

  • 0
    TI__Mastermind 45250 points

    Has anyone had a chance to look at the request above?

    Can you give a time frame as to when you might be able to provide the information?

    Thanks for your help with this!

    Richard Elmquist

  • 0 in reply to Richard Elmquist
    TI__Expert 4145 points

    Hi Richard,

    Figure 56 on Page 54 of the datasheet shows the responses for the 6 different preset filter coefficient sets stored in memory.
    I believe the decimation filter's coefficients are also user-programmable.

    Sincerely,
    Olu

  • 0 in reply to Olu Sodipe
    TI__Mastermind 45250 points

    Olu,

    Thanks for your response!

    I understand about the filter types etc., but do we have anything that would allow the customer to actually see the filter coefficients? He stated that in looking at figure 49 in the data sheet that he could not actually see the filter coefficients. Do we have an excel file (or similar) that would allow this? The reason I ask is that another engineer was able to supply this for another one of our ADC parts. If this is not possible please let me know.

    Maybe there is another way the customer can derive their values? The customer can then load them once he has them or understands how they can calculate them.

    Thanks for your help with this!

    Richard Elmquist

  • 0 in reply to Richard Elmquist
    TI__Mastermind 45250 points

    Olu,

    Have you had a chance to look at the further questions I asked in the forum?

    Thanks for your help with this!

    Richard Elmquist