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ADS61B49: ADCs - Out of range OVR_SDOUT pin - Metastability

Part Number: ADS61B49

Tool/software:

Dear TI,

I have a question about ADCs and the potential metastability issue. Specifically, I'm concerned about the internal comparators in the ADS61B49 architecture.

Could metastability in these comparators trigger the OVR_DSOUT pin (which is used as an overflow output in our case)? For example, could metastability cause the logic to incorrectly interpret a sample as being out of range, potentially leading to a false overflow error? We use this pin to trigger an FPGA for critical error detection, and I am worried that metastability might cause false OVF errors.

If this scenario is possible, we may need to implement some filtering within the FPGA as a workaround.

Additionally, we are unclear about the exact logic behind the OVR_DSOUT pin. Once it is triggered, when does it get reset?

Thank you in advance for your assistance.

Best regards,