Capacitive loading of op-amps

[Arthur Harrison]

JH wrote in reference to JV's oscillator at
http://www.netcontrol.fi/~jocke/circuits/osc1.gif
 
[excerpt]:

>There is a
>certain *range* of capacitance values that will make an
>opamp instable. You can either stay below that range
>(very small cap), or go above that range (very large
>cap). Think of it as a 2-pole filter, one pole being the
>internal compensation cap, and the second one being
>formed by the output resistance and the capacitive load.
>It's only when the two poles are relativly close together
>that you get high Q factors, and thus overshot or
>oscillation.

AH writes:

While inventorying some Analog Devices ICs today, I came 
across AD688 precision references.  The data sheet addresses
capacitive loading of the part's on-board op-amps. The technique
described is readily applicable to output-bypassed applications
such as that in Joachim's schematic.

FWIW, see page 8 of 8 in the .pdf file at:
http://www.analog.com/pdf/ad688.pdf

-Art