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ADS1220: Stack of output data.

Kengo.Y
Guru 10385 points
Part Number: ADS1220

Hi team,

Could you give me your advice?

Occasionally, even if my customer input data, there is no output.
However, if the input Reset command, it is output.
At this time, the DRDYpin was active(Low). 

What could be the reason why DRDYpin is output but no output is the output data?
I would like to know under what conditions the output data will be lost.
(* CSpin always connected to DGND.)

Sincerely.
Kengo.

  • 0
    TI__Guru** 112775 points

    Hi Kengo,

    It would be helpful to know the ADS1220 configuration settings.  It would also be helpful to know if the data are read directly or by using the RDATA command.

    It is possible that a transient event has occurred that has internally reset the ADS1220 to the default state.  Is it possible for you to send me the schematic?  Also, when DRDY goes low, the DRDY pin should go high on the first rising edge of SCLK.  Does this happen?

    Best regards,

    Bob B

  • 0 in reply to Bob Benjamin
    Guru 10385 points

    Hi Bob,

    Thank you for your reply.
    I'll send you a PM.

    Sincerely.
    Kengo.