[sdiy] LM13700 VCLFO

[Oakley Sound]

 > What are the advantages/disadvantages of using an op amp integrator 
on the LM13700 output rather than just using an integrator cap followed 
by an op amp buffer?

The advantage of the integrator is that it is highly unlikely to suffer 
non destructive latch up or input phase reversal.

FET op-amps and quite a few others will latch up if the inputs exceed 
the allowable operating range. This happens easily with a voltage 
follower circuit if you do not restrict the input voltage. At power up 
with only the output of an OTA and a cap on it's non inverting input pin 
the op-amp there is a strong possibility it will latch up.

Tony

www.oakleysound.com