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OPT3001EVM: How to Improve Temperature Stability Performance

KIM Andy
Expert 2530 points
Part Number: OPT3001EVM
Other Parts Discussed in Thread: OPT3001,

Hello

Testing is underway using the OPT3001 EVM software.

Interim inspections show a slight drop in temperature performance compared to competitors' products (CG5162TC).

      CG5162TC DATASHEET : http://www.wpgholdings.com/uploads/bu/bu_5/2014/20140917_Security/CG5162TC.pdf

Is there any possibility to improve the temperature stability by changing the setting value instead of the default setting?

Thank you.

  • 0
    TI__Mastermind 25845 points

    Hi,

    Can you please provide some more details on the test you are running? Please provide the data showing this dip in performance.

    Best,

    Alex

  • 0 in reply to Alex Bhandari-Young
    Expert 2530 points

    hi

    The customer sealed third-party EVM and OPT3001EVM with CASE.

    Then, using a heating gun, the CASE temperature was increased to 105 degrees.

    Compared with the applied value at 25 degrees, the EVM of other companies showed a 2.2% error.

    The OPT3001EVM had a 6.2% error. Both products had default settings.

    Is there a way to improve it?

  • 0 in reply to KIM Andy
    TI__Mastermind 25845 points

    Hi,

    Is this a 6.2% drift over temp? Error is a general term if they are comparing with a reference this could include a number of factors not related to temperature. The OPT3001 is spec'd to +/-10% accuracy (due to our calibration of the device), which means holding temp constant the device may give an error compared to a reference meter. However, over temperature we would not expect any type of change in measurement of this magnitude (see below). Can you please provide some more details of this test? Are you able to provide the data?

    6.2% if it is drift over temp is very different from our device spec. Typical temperature drift is 0.01% per degC. This means over 25 degrees we typically see 0.25% error due to temperature change, and the numbers giving >24x greater does not make sense to me.

    Best,

    Alex