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SN65DP159: Power Requirements for VCC/VDD

Tamio Yokokura
Expert 3960 points
Part Number: SN65DP159

Hi, Support Team

Since DP has an internal VREG(LDO), doesn't a high PSRR LDO need as 3.3V power supply?

And also, how about 1.1V rail?

Thanks

Tamio

  • 0
    TI__Expert 5455 points
    Hello Tamio

    We have ripple levels, with this one you can have an idea because we don't have a PSRR reported on our datasheet. We only have the input ripple levels:
    Ripple ~30mV up to 20MHz, ripple ~20mV over 20MHz is for 1.1V
    Ripple ~45mV up to 20MHz, ripple ~30mV over 20MHz is for 1.8V
    Ripple ~60mV up to 20MHz, ripple ~40mV over 20MHz is for 3.3V

    Regards
    Francisco