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AFE10004EVM: Inquiry

Part Number: AFE10004EVM
Other Parts Discussed in Thread: AFE10004


Good Day. I have a customer who is working with AFE10004. Please see below his query for your reference. Thank you very much.

I am looking to speak with an application engineer to explain certain parts of communicating with the AFE10004 device.

I am looking through the datasheet and I am having a little trouble understanding.

One of the questions I had was understanding the look up table functionality. If I write values to the look up table registers is this value supposed to automatically adjust the output power or is there certain enable bits that need to be written to.

So I am writing specific values to the look up table registers for temperature compensation. Does the device automatically adjust the output power at the specified temperature when I write to it?

Also, I have an evaluation board and the supplied GUI doesn't work as I would expect. I think may be doing something wrong or I may not understand it properly.

For the evaluation module, I am having trouble using the supplied GUI.

Specifically the Look Up Table sheet.

When I change the Baseline register value, the output voltage doesn't seem to change at one point, it did change but then it stopped. I'm not sure exactly what happened.

I tried writing a reset to the device to the factory configuration and it still doesn't work.

I know the device still works, because when I use a GUI that I've created the output voltage changes.

I would also like to know if I use the "OVRD TMP" function on the look up table sheet, does the output voltage change automatically according to the slidder settings?

Best Regards,

Ray Vincent

  • Hi Ray,

    Paul will take a look at this today.



  • Hi Ray,

    It is important to understand that this device can be operating in a closed-loop LUT mode or the LUT mode can be disabled and the LUT coefficients can be modified.  In the GUI, the LUT mode should be disabled if the baseline value is being changed.  LUT mode then needs to be enabled again for these new coefficients to take effect.

    For example:

    1. Disable the LUT mode:

    2. Update the baseline:

    3. Enable the LUT again.

    4. measure that the DAC has updated.

    When in LUT mode, you can enable the TEMP OVERRIDE field and manually sweep the temperature.

    If you would like to have a quick call with your customer, it might be better.