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AFE4300: Delays needed after setting some registers

Prodigy 50 points

Replies: 4

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Part Number: AFE4300

Hello,

I noticed that delays are needed after setting some registers for the right values to be read off the ADC. The most problematic one is the delay needed after setting registers 0x0A and 0x0B for BCM reading. Also, another delay is needed after setting register 0x10 to switch between I and Q readings. The delays right now are 500 ms.

Without the delay after setting 0x0A and 0x0B registers the value read is lower than the right value, and without the delay after switching between I and Q (register 0x10) the value read experiences significant fluctuations - upto 150 ADC ticks.

 What is causing the need for these delays and is there a way to get rid of them? These delays are significantly decreasing our sampling rate and increasing our power consumption.

Thanks
  • Hello Kenna,

    We would like to take this discussion offline since the device AFE4300 is under selective disclosure.
    Can you send your questions to biosensing_afe-support@list.ti.com along with a reference to this E2E post?

    Regards

    Praveen

    TI makes no warranties and assumes no liability for applications assistance or customer product design. You are fully responsible for all design decisions and engineering with regard to your products, including decisions relating to application of TI products. By providing technical information, TI does not intend to offer or provide engineering services or advice concerning your designs.

  • In reply to Praveen Aroul:

    Hi Praveen,
    I already did. I sent an email about 5 days ago.

    Thanks

  • In reply to Kenan Habib:

    Hi Kenan,

    I am closing this post since the discussion has been taken offline and responded.

    Regards

    Praveen

    TI makes no warranties and assumes no liability for applications assistance or customer product design. You are fully responsible for all design decisions and engineering with regard to your products, including decisions relating to application of TI products. By providing technical information, TI does not intend to offer or provide engineering services or advice concerning your designs.

  • In reply to Praveen Aroul:


    Ok, thanks!

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