Opamp compensation

[senmeis]

Hi,

The stability of an Opamp can be optimized by one pole or two pole compensation. Is this compensation integrated internally or realized externally? Is it so two pole compensation delivers better result but is more difficult to implement?

 

[barry]

Is this compensation integrated internally or realized externally?

Read the data sheet.

“Back in the day” there were opamps that REQUIRED external compensation; I’m not sure there are any of those anymore.

 

[dick_freebird]

If you want unity-gain-stable then internal
comp is almost certainly necessary. Unless
it's an OTA, then shunt-C outside, on the
output is primary comp.

Some op amp families would bring out
10X gain stable versions for a different cut
at the trade-offs.

Sometimes more than one pole or two
are necessary. I've looked at some op amps
which have odd little caps in places you
wouldn't think, for reasons that I don't
understand (would have to get a live circuit
to simulate to explore). Maybe to get some
helpful zeroes.