Power sequencing for AD9234

Is anyone aware of power sequencing requirements for the different supply rails on these parts?

AVDD1-> 1.25V

AVDD2-> 2.5V

AVDD3-> 3.3V

AVDD1_SR-> 1.25V

DVDD-> 1.25V

DRVDD-> 1.25V

SPIVDD-> 1.8 to 3.3V

The datasheet doesn't offer any details and I can't find any schematics for the evaluation board.



  • 0
    •  Analog Employees 
    on Aug 3, 2015 9:58 PM over 5 years ago

    Hi Jarrett

    Thank you for contacting EZone regarding the AD9680. The AD9680 does not require any power supply sequencing. The AD9680 has an internal Power On Reset (POR) circuitry that monitors all the seven domains you have listed. The POR will hold the AD9680 in reset mode until all the supplies are up. Once the supplies are stable the POR will release reset and the part is ready to work.

    Hope this helps. Please let me know if you have any further questions.