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Original question:

IWR1642: Response curve of HPF in analog IF

IWR6843ISK: HPF responses plots, which AD sampling frequency? applicable to IWR6843?

user5235784
Prodigy 160 points
Part Number: IWR6843ISK
Other Parts Discussed in Thread: IWR6843

In regards to the annotated plot of HPF responses, which AD sampling frequency is used?

From e2e.ti.com/.../875867

I infer the HPF filters are adjusted (proportionally?) to AD sampling frequency.

Are these curves applicable to IWR6843, too?

Thank U for providing the curves!

  • 0
    TI__Mastermind 25835 points

    Hello user5235784,

         It uses 5 Mega samples per second as Analog to Digital sampling frequency. Anti aliasing filters provides 60dB attenuation. 

    Yes, Anti aliasing filters changes proportionally as we change the AD sampling frequency from 2MSPS to 10MSPS so as to keep the same 60dB attenuation for out of band. 

    Yes, these curves are applicable to IWR6843 devices too. 

    Thanks and regareds,

    CHETHAN KUMAR Y.B.