• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 46 subscribers
  • Views 292 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.

RTOS/DAC7571: DAC7571

Hugo Wang
Expert 1525 points
Part Number: DAC7571

Tool/software: TI-RTOS

Hi Sir

I have two questions about DAC7571 design as below.

1. We use CPU I2C to control DAC7571 and has stable DC output level.

Q1.  If we only disable CPU and DAC7571 still have power supply, Does output level of DAC7571 exist? 

2, We use CPU I2C add level shift (+1.8V to +5V) to control DAC7571 and has stable DC output level.

Q2.  If we only disable CPU and DAC7571 still have power supply, Does output level of DAC7571 exist? 

Thanks for your great support.

  • 0
    TI__Genius 14220 points
    Hi Hugo,

    Thank you for your query. All DAC's including DAC7571 usually have internal registers that store the code programmed into them as long as they are powered on. Removing the programming interface doesn't have any impact on the output voltage unless the removal process creates a glitch in the supply momentarily and in turn, resets the DAC. The level-shifting of the I2C also won't have any impact.

    Hope I have answered your question.

    Regards,
    Uttam Sahu
    Applications Engineer, Precision DACs