Q:

Input Biased Compensated Op Amps

I was reading about the Input bias currents for an op-amp. 
And I had a question regarding the ones internally compensated for. 
So in general if I was to use an Op amp for any particular application and I have an op amp with the internal compensation for the bias currents, then do I ever have to worry about the bias currents or connecting resistors to compensate for the design ? 
Also if the answer is yes to the above question, then why don't people just use the internally compensated ones ? 

A:

The compensation you're talking about will reduce the bias current, but not eliminate it.  The improvement will be reflected in the specifications for the data sheet of any op amp.  Whether you need to worry about it or not will depend on your application and specific circuit design.

