About Blackfin voltage ripple requirement

Processors & DSP ADIApproved Aug 5, 2015 00:00 2 replies Original on forum ↗

Thread Summary

The user inquired about the voltage ripple requirements for the Blackfin core voltage (VDD_INT) and DDR voltage (VDD_DMC). The final answer stated that the voltages should not exceed the specified minimum and maximum limits, with VDD_INT on BF60x set to 1.25V (nominal), not falling below 1.19V or above 1.32V. Bypass capacitors are recommended to ensure stability.
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ADIApproved Question

Aug 5, 2015 00:00

I just ask about the Blackfin voltage ripple requirement . Such as core voltage(VDD_INT) and DDR voltage(VDD_DMC) .

Thanks

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JoeT Reply

Sep 4, 2015 00:00

Hello,

VDD_INT and VDD_DMC can tolerate ripple as long as the voltage never crosses below the minimum spec or above the maximum spec. To help ensure this is the case, I recommend setting your voltage regulator to the nominal value and having plenty of bypass capacitors of varying sizes. For instance, the VDD_INT regulator should be set to 1.25V (nominal) on BF60x and should never cross below 1.19V or above 1.32V.

Regards,

Joe

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EZAdministrator Reply

Aug 2, 2018 00:00

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin

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