[sdiy] Op amp slew in audio circuits - sims vs. real life

[David G Dixon]

I specified the TLE2072 in a VCO core to help with tracking.  It has a slew
rate around 35V/us.

> A general question...
> 
> I'm assuming most of us throw the TL072 or similar at most of 
> our audio circuit op-amp requirements right?
> 
> Can any of you give some examples of where you specified an 
> op amp with better/faster slew specs because standard op-amps 
> weren't fast enough?
> 
> Asking because I'm working on a pulse output circuit 
> (frequency up to 20KHz) that I'd like to shave every last 
> µSec out of in order to get the sharpest response - but I'd 
> also like a reality check on how much to worry about the slew 
> and slight imperfections I'm seeing in sim (using Universal 
> Op Amp 2) and how that will translate to real life.
> 
> Yes, at some point I will breadboard/protoboard it - just be 
> good to get a general consensus before that.