CA3094 = LM13700 ???

[Wales]

I built the small stone off of GGG and when I went to grab the CA3094 ic's that I had ordered from smallbear I found I only had one not five. Now I don't know if I lost them or never received them but its been months since i received the order, so if I lost them or didn't check the whole order over when I got it it's still my fault. I will order new ones once my credit card is payed off a little more but in the mean time I was looking for a replacement.

I have searched old post and googled everything i could think of and i get a few different answers. Some say there is no replacement for the CA3094, and some say there are a few 16 pin ic's that will work if you have the space on the board. LM13700 is one of these. I have looked at the data sheets for both ic's and to me it looks like they are different, however I am a newbie so I could be totally wrong.

So I guess I am asking if anyone know if this will work in this project or wither the pin configuration needs to be changed or whether you can just plug it in and forget about the other 8 pins?

[biggy boy]

Hum
What about an LM3080??

[mdh]

It seems like if you've already built the board, it would be a lot less trouble to design a new layout designed for the 13600/13700 than to try to retrofit in the bigger (dual) chips.  It might be possible, but it also might require some changes to the circuit.  It seems, for example, based on a comparison of the Small Stone and Ross Phaser schematics on Tonepad, that the Small Stone might require access to some parts of the Darlington buffer that you don't get from the 13600 package.

Also, if you compare the 3094 and 3080 datasheets, they are not pin-for-pin compatible, as the 3080 is missing the buffer.

Of course, building the Ross Phaser might be the best option if you don't want to shell out for 4 more 3094s.  I have one on the breadboard at the moment, and it sounds fantastic.

[Wales]

Thanks, yeah I don't want to have to alter the circut just for the quick fix. I'll wait till I get the parts.

I have the parts for a MXR100 so I'll put that together for my phasing needs

I'm new to electronics but i find it odd that certain parts are no longer made. There was obviously a use for the parts originally and those devices are eventually going to breakdown, so you would think another manufacturer would at least replicate the exact product to suit people's needs. Like in car parts you might not be able to find that original part for your classic corvette, but there will at least be a remake off it by some other company.