• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 64 subscribers
  • Views 100 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.

REF5030: NEW part REF7030QFKHT

Abdul Choudhury
Prodigy 30 points
Part Number: REF5030

I am looking at the Long-Term Stability of the REF7030QFKHT LCCC package. Section 7.11 has a graph, does the stability level out or does it keep dropping over time. Is the long term stability 0 to 1000h @ 35DegC  35ppm while its ON or OFF? We need the long term stability figures up to 40 years if possible.

  • 0
    TI__Expert 5350 points

    Hello,

    Typically, most of the deviation takes place in the first 100 hours. The long term drift is calculated considering the device being ON.  

    When it comes to estimating the long term drift past what shown in the figures in the datasheet, there are some methods to do so. It is important to note, however, that this is just an estimation, and actual long term drift between individual devices can vary. This blog highlights how this is the case: e2e.ti.com/.../ic-long-term-stability-the-only-constant-is-change

    Some highlights from this blog:

    A 1000 hour long term drift test at 125°C specifies a 10-year product life at room temperature, exclusive of quiescent condition self-heating.

    Vout may shift over 10-year life up to ±100% of the max/min datasheet specified value. This means that after 10 years (87,600 hours), under constant operation at room temperature, the estimated max output voltage shift for the REF7030 LCCC package should be less than ±0.025% or ±250ppm, as specified in the datasheet. 

    Additionally there are ways to minimize long term drift impact, such as calibration. 

    Are you specifically looking for a 40 year long term drift spec? What is the temperature variation that is expected for this device? What sort of methods have you considered to minimize the impact of long term drift?

    Thanks,

    Jackson