[sdiy] digitally switching cv and audio lines

[ASSI]

On Tuesday 18 February 2003 10:06, Guy Taylor wrote:
> I to would love to see the eagle project :)

OK, OK - I'll put it up over the weekend. Have to check the files and 
write up a readme...

> Has anyone looked at the AD8113? It's a bit bigger and more expensive
> than the AD75019 but may be better as it has much lower cross talk.

I looked at that one first actually, here my reasons not to use it (you 
may have different requirements and come up with different answers):

- Each outputput can only be driven by a single input. In other words, 
you can scramble the order of lines, you can split signals (and drop 
one for each split), but you can't mix them.

- I didn't find specs for offset voltage, which would be of major 
concern for CV applications.

- What do I need 60MHz bandwith for?

- LQFP100 is significantly harder to handle and layout than PLCC44.

- Last I tried to source it, the AD8113 was seven times more expensive 
than the AD75019, which was enough to put me off. No way I'd be doing a 
32x32, let alone several at that price...


Achim.
-- +<[ Q+ & Matrix-12 & WAVE#46 & microQkb Omega sonic heaven ]>+ --

Q Voice Architecture:
http://homepages.compuserve.de/Stromeko/Qstuff/Qvoice.pdf