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OPA2322: Query on Change in "Offset Voltage vs Temp" and "Open Loop Voltage Gain" Specification in Datasheet SBOS538F

Vijay Kumar
Prodigy 10 points
Part Number: OPA2322

Hi,

I have a query on the changes made to the following parameters in the latest datasheet "SBOS538F" w.r.t. the previous revision of the datasheet "SBOS538E".

1. Input Offset Voltage vs Temp (dVos/dT): In datasheet SBOS538E, the parameter values were boldened to signify that the values are specified for the temp range of -40'C to +125'C. But in the latest datasheet SBOS538F, the format has been changed and the Test Conditions does not specify the full temp range. Does it mean that the Typ & Max values specified for the parameter are only applicable for Ta=+25'C? If so, is there any characteristic curve available which captures the "change in input offset voltage vs temp" for this device? Could you please confirm whether there is any change to the actual device due to which the electrical characteristics section has been updated?

Please see below snippets for reference.

2. Open-loop voltage gain (AOL): Similar case as mentioned above (please see snippets below)

Could you please confirm whether there is any change to the actual device due to which the electrical characteristics section has been updated?

Thanks

Vijay

  • Former Member
    0 Former Member

    Hi Vijay,

    Thanks for pointing this out.  I'm not exactly sure what the explanation is for the change, but I read the data sheet in the same manner that you do.  I've asked the appropriate engineers to see if there is an explanation for this.  I will try to have an update for you tomorrow (US time).

    Regards,
    Daniel

  • Former Member
    0 Former Member in reply to Former Member

    Hi Vijay,

    Thank you for your patience.  Unfortunately, I think it is going to take a bit longer than I initially expected to get an answer for your question.  With the Holiday in the US this weekend, I expect to have answer for you by next Tuesday (US time).

    I will reach out to you with an update via this thread.  Again, sorry for the delay and thanks for your patience.

    Regards,
    Daniel

  • 0 in reply to Former Member
    Prodigy 10 points

    Thank you Daniel for reaching out to the concerned engineers. I'll wait for your response. 

  • Former Member
    +1 Former Member in reply to Vijay Kumar

    Hi Vijay,

    Thank you so much for your patience.  I have been able to confirm that there has been no change in the device's process.  The temperature ranges were mistakenly left off when the data sheet was updated. The data sheet is currently in the queue to be fixed.

    Thanks for pointing this out.

    Regards,
    Daniel

  • 0 in reply to Former Member
    Prodigy 10 points

    Thank you Daniel for your support in getting the clarification!