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ADA8282 SPICE model failure

I've simulated this:

In LTspice but it behave weird I can't understand my fault, I think maybe the model have problem?
I've downloaded the model from ADA8282 ADI page.

Also I've followed it's evaluation board approach UG-846:

still the problem exist.

New question rises: why they've used C5, R5 and R4? 

New information added.
[edited by: mohammadsdtmnd at 2:48 PM (GMT 0) on 12 May 2019]
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  • Hi mohammadsdtmnd,

    Yes, I see the same strange behavior of the model if I let Transient Response run beyond about 45ms. I cannot tell what's causing the ADA8282 model to misbehave like that!

    The Spice model file does hint that the model may be very minimal, copied below:

    "*This model was created for the purposes of simulating functionality only.
    *Parameters modeled include:
    * Output Voltage Swing
    * Bandwidth
    * Functionality at 36dB gain
    * Supply current"

    I think in normal applications dealing with typical signal frequencies / periods, that's a probably a "don't care".

    Is there a particular reason that you need to let your simulation run that long?