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OPA365-Q1: OPA365-Q1

Paul Guzzetti
Prodigy 70 points
Part Number: OPA365-Q1
Other Parts Discussed in Thread: OPA365, OPA365-EP, LMV793, OPA607, LMP7717, OPA354

Hello,

Is the OPAx365-Q1 equivalent to the OPA365 except the OPAx365-Q1 is qualified for automotive?

We have used the OPA365 with excellent results, but are having issues with availability. It looks like we could use the OPAx365-Q1 as a drop in replacement, but I would like for confirmation before moving forward with this approach.

Thank you,

P.J. Guzzetti

  • 0
    TI__Genius 15716 points

    Hi Paul,

    First check if there is inventory at any of the distributors.

    Yes, the Q1 devices undergo more reliability vetting, which adds cost, but they are the same part. The same is true for OPA365-EP, which but which also has Enhanced Plastic encapsulation for better moisture resistance.

    Another OPA365 replacement is the OPA607, or its older cousin the LMV793 (LMP7717). Please note that these don't have an input range up to the positive rail, are decompensated, and have ~300ns of overdrive recovery time.

    Best regards,

    Sean

  • 0 in reply to Sean Cashin
    Prodigy 70 points

    Hi Sean,

    Thank you for the reply and confirming. I don't believe there is interest at this time in testing the OPA354, unless there is a major advantage in using it. Our application uses the OPA365 for current sensing a BLDC.

    If you believe using the OPA354 could be an improvement I would be open to learning more about it and its capabilities.

    Thanks,

    PJ

  • 0 in reply to Paul Guzzetti
    TI__Genius 15716 points

    Hi PJ,

    Some improvements to consider are its faster LSB/2 ADC settling time, allowing for a shorter aquisition time and a higher sampling rate, and also its quad package, for a BLDC current sensor you can use one amplifier for each phase and one for Vref to save board space. It just a suggestion if availability becomes an issue.

    Best regards,

    Sean