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What is the absolute max differential input specificaiton for the AD8213? (I am working on a failure analysis.)  The overdrive recovery plots in the data sheet use 400mV, but where do the transistors break?

Question asked by jgstanford on Dec 2, 2016

I am working a failure analysis for an AD8213 circuit that can see fairly high differential input voltage in the case of a short circuit in the monitored output from a high-side switch.  The data sheet has a typical range number of 250mV and an example plot for overdrive recovery showing 400mV differential.  The input is connected to a proprietary circuit block, so I have no way of estimating what might happen with higher differential inputs.  Can you give me an absolute max number, or even a theoretical limit based on the fab process?


Jon Stanford