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Texas Instruments ADS8881: Why is a minimum conversion time specified?

Data converter A/D converter

The device supports operating modes that use the Busy Indicator.

When using the Busy Indicator, DOUT is in the 3-State state during the conversion, but DOUT is no longer in the 3-State state when the conversion is finished. At this time, the Busy Indicator gives a High ⇒ Low transition to the IRQ on the digital host side. In this case, the tconv_min specification must be met.

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