What is PROS/CONS for integrating the op-amp external?

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asicpark

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Hi,

I've just got the new project, which is integrated the op-amp outside into inside
the DAC IC.
I'm just wondering there is fair reason for using the op-amp out of the DAC such as noise.
Generally, what is limitation for the design of the OP-amp stand alone or integrated into a chip?
Some guys just thought it is no brainer since outside thing just move to inside,
but I don't think so.

Thanks,
 

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