LMH6655: Part Damage

Dave Chowning

Part Number: LMH6655

Will the LMH6655 be damaged if the + input is driven (voltage follower configuration) with any voltage and both power pins are not connected to power? I believe it will not be damaged because there is no current path to ground or supply.

over 7 years ago

0 Hooman Hashemi over 7 years ago

TI__Mastermind 22825 points

Hi Dave,

I've not tested the LMH6655 this way, but I also tend to agree with you that this should not damage the device.

Have you encountered a failure this way?

Regards,

Hooman

0 Dave Chowning over 7 years ago in reply to Hooman Hashemi

Prodigy 110 points

I want to power down some of these devices to save power but have a driven signal into the + input of the part. Do you know if there is a current limit in this condition where the power supply is attached to the part but the supplies are not on?

Thanks, Dave

0 Hooman Hashemi over 7 years ago in reply to Dave Chowning

TI__Mastermind 22825 points

Hi Dave,
In most cases, keeping the input current to below +/-10mA ensures that the device will not be harmed.

Regards,
Hooman

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LMH6655: Part Damage