AD5553 Operating Temperature

Document created by lallison Employee on Apr 3, 2017Last modified by isantos on Oct 10, 2017
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I see that the operating temperature of the AD5553 is -40 to 85C.  Is that air temperature around a mounted device on a standard board or is that case temperature?

Thanks,

-John

 

Hi John,

 

The operating temperature ranges seen on the data sheets are the allowable temperatures of the junction of the parts.

 

Let us know if you have any further questions.

 

Regards,

Mark

 

Mark,

Thank you for the information.  It looks like we will need to find a higher temperature part.  Current board temperature is around 100C.  I assume if I use this part, it will survive (since the max junction temperature is 150C, but the parameters may not be as specified in the specification sheet.  Any suggestions?

Thanks,

 

Hi John,

 

Would you have any other specifications that you would need to take note of? Could you share what is your target application? Knowing these, we can pick DACs that will better suit the application that you have. I have made a list of DACs below that can operate up to 125C and has 14 or 16 bit resolution. Please take a look for your reference.

  1. AD5446
  2. AD5453
  3. AD5546
  4. AD5556

Let me know if you have any further questions.

 

Regards,

Mark

 

Hi Mark.

Well we have a design and our board temps are a bit higher than we expected.  So a perfect alternate would be something that is FFF (form fit function) to the exsiting part but operates to 125C or greater.  I'll look through the list and get back to you.

 

Thanks,

-John

 

Hi,

 

I would like to correct one of the statements in this thread: 

The operating temperature ranges seen on the data sheets are the allowable temperatures of the junction of the parts.

 

The temperature range (i.e. -45 to 85 degC) specified in the datasheet is the allowable operating ambient temperature

 

 

Cheers,

Ivan

 

 

This document was generated from the following discussion: AD5553 Operating Temperature

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