[sdiy] Lorenz attractor analogue multipliers

[James Dunn]

Hi,

A while ago someone posted a link to this circuit on how to build a 
Lorenz Attractor: http://frank.harvard.edu/~paulh/misc/lorenz.htm
Since MPY634's are quite expensive and not the easiest part to source, I 
wonder if they could be substituted for a couple of AD633's?
They seem to be pretty much the same except the MPY634 has non-inverting 
and inverting z inputs, whereas the AD633 just has one z input. Would it 
just be a case of connecting the z input (pin 4) of the AD633 to the 
output (pin 5)?

James