• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 46 subscribers
  • Views 151 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DAC53401: maximum output for Power-Supply Margining

Zach Xia
Expert 6275 points
Part Number: DAC53401

Hi expert,

Can you help elaborate why the maximum output is derived as below?

Per our understanding, it should be derived as this equation.

Thanks,

Zach

  • 0
    TI__Mastermind 30938 points

    Hi Zach, 

    I agree with you that the maximum output should be calculated by (VFB*2) - DACmin so that the differential between the margin high and margin low values are equal (if the goal is to margin by +/- a certain percentage). The equation you underlined works out when VFB is 0.6V, but not for other values. I'm not exactly sure where it was derived from. I would just recommend that you keep the maximum code at least 1% below the DAC full-scale code to avoid any error from the DAC full scale error. 

    Best,

    Katlynne Jones