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Original question:

ADS131A02: Datasheet errors and general documentation issues/questions

ADS131A02: ADS131A02

user5389375
Prodigy 10 points
Part Number: ADS131A02

Hi,

I have two question.Could you tell me about the questions below?


(1) When does DRAY start outputting in Asynchronous Intterupt mode?
     ADC_ENA [3: 0] = “1111” , Wake-up command? , or others?

(2) If STAT_1 [4] = 1, whether or not the register needs to be cleared(read STAT_P and STAT_N) for start new conversion?

  • 0
    TI__Guru* 92655 points

    Hello,


    When the device is started up, you would write the ADC_ENA[3:0] to enable the ADCs and then send the WAKEUP command. The WAKEUP starts the device converting and then the /DRDY pulses follow. It may not be entirely clear, but it's shown in the datasheet in the Initialization Set Up (Figure 106, page 79).

    STAT_1[4] indicates that the F_ADCIN is high. This shows that something in STAT_P or STAT_N is set high. These registers indicate that the input may be over-ranged or close to a threshold value set by the input comparators. The mechanisms are shown in the datasheet (Figure 42, page 30). These flags are only warnings. The register does not need to be cleared to start a new conversion.

    Post back if you have further questions.


    Joseph Wu