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Absolute maximum ratings

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chang830

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Hi,
In the commenrcial product datasheet, it always gives the "absolute maximum rating" which describe the risks when the product operate exceeeding this limt.

I wonder how to define this "absolute maximum ratings"?

Thanks
 

These ratings describe the operation conditions so that a long exposure to these condition can cause irreversible damage to the device. For instance, a too high supply voltage could cause an accelerated wearout of devices. A too high and sustained input voltage could cause permanent damage to ESD structures. And so on.
 

Humungus said:
These ratings describe the operation conditions so that a long exposure to these condition can cause irreversible damage to the device. For instance, a too high supply voltage could cause an accelerated wearout of devices. A too high and sustained input voltage could cause permanent damage to ESD structures. And so on.
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Hi Humungus,
Thanks for he reply.

I do understand what these rating means. What I want to know how to define them. ? All the product will provide this ratings to customers.Any guidelines to define them

Thanks
 

Just apply the definitions:

Maximum juction temperature: temperature at which the device could be permanently damaged if exposed for a "relatively" long period. In this case you must take into account the electromigration on the metal tracks, accelerated aging of semiconductor parts, accelerated aging of passives, etc.

For the maximum operating voltage you must proceed in the same way.

The same for the other parameters. You can ask your fab for typical values.
 

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    chang830

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