AD7380 : SCLK for 2-wire mode

Hello,

I'm DFAE in Japan. I have a question about SCLK in 2-wire mode of AD7380 from a customer.

I think we don't need to send SCLK while SDOA/SDOB are DON'T CARE. Is it correct?

Best Regards,

Akira

Parents
  • +1
    •  Analog Employees 
    on Mar 20, 2020 6:28 AM

    Hi Akira

         SCLK signals are used for data transfer from and to the AD7380. If no data transfer or the latest conversion result is a don't care, there is no need to make SCLK signal available and a new conversion then can be initiated. Figure 40, low throughput application is best example in this situation. CS signal is required to initiate the conversion and then SCLK is only available when reading the valuable conversion result. What is the current set up with customer? is the no SCLK situation after power up or in the middle of continuous conversion?  Is it okay what type of application the customer is using the AD7380?

    Regards,

    Jonathan

Reply
  • +1
    •  Analog Employees 
    on Mar 20, 2020 6:28 AM

    Hi Akira

         SCLK signals are used for data transfer from and to the AD7380. If no data transfer or the latest conversion result is a don't care, there is no need to make SCLK signal available and a new conversion then can be initiated. Figure 40, low throughput application is best example in this situation. CS signal is required to initiate the conversion and then SCLK is only available when reading the valuable conversion result. What is the current set up with customer? is the no SCLK situation after power up or in the middle of continuous conversion?  Is it okay what type of application the customer is using the AD7380?

    Regards,

    Jonathan

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