SSM2019 fails with high input current

We are using SSM2019 for balanced MIC pre-amp. It is powered by +/- 15v source.

Occassionaly a device fails in operation with no apparent reason. When testing failed device with multi-meter it looks like the input stage broke but I can't be sure on that.

The design include schottky diodes (BAR43CFILM) for clamping the input signals. In addition the microphone input connector has ESD protection diodes (TPD2E007).

Any ideas?

Thanks,

David

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    •  Analog Employees 
    on Aug 2, 2018 2:40 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

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    EZ Admin
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  • 0
    •  Analog Employees 
    on Aug 2, 2018 2:40 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin
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