AD8476 Overvoltage Output

In the datasheet there is mention of ESD clamps on the inputs, but are there clamps on the outputs as well? If so what current can they tolerate? This is of importance when the output voltage exceed the rails. We need to analyse the failure mode when connections are made incorrectly.

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    •  Analog Employees 
    on Nov 18, 2015 5:37 PM

    Hi Michael,

    According to the product owner of the AD8476, the device has ESD protection diodes at the output. The ESD diodes can handle up to 100 mA of continuous current with no observed failures and it can handle the repeated stresses at that level. If you look into the datasheet of the AD8476, the short-circuit current of the device has a typical value of 35 mA. Based on that data, there's no need to implement an external circuit for current-limit protection. The diodes can handle the current even when the output of the AD8476 is saturated.

    Can I ask what is your application?

    Regards,

    Jay

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  • 0
    •  Analog Employees 
    on Nov 18, 2015 5:37 PM

    Hi Michael,

    According to the product owner of the AD8476, the device has ESD protection diodes at the output. The ESD diodes can handle up to 100 mA of continuous current with no observed failures and it can handle the repeated stresses at that level. If you look into the datasheet of the AD8476, the short-circuit current of the device has a typical value of 35 mA. Based on that data, there's no need to implement an external circuit for current-limit protection. The diodes can handle the current even when the output of the AD8476 is saturated.

    Can I ask what is your application?

    Regards,

    Jay

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