Tonepad Orange Squeezer Layout

Started by StereoKills, June 30, 2009, 11:58:06 PM

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StereoKills

I just finished bread boarding the Orange Squeezer from the schematic at tonepad, and just noticed that the schematic and the layout don't match up on the IC's pins. Is it just me being confused because it's late or are they really different? The layout has pins 1 & 2 connected directly together, in the schematic they are separated by a 220k resistor. Pin 3 differs in the layout and pins 5, 6 and 7 are included in the layout, but not on the schematic. What gives?

http://www.tonepad.com/getFile.asp?id=11
"Sometimes it takes a thousand notes to make one sound"

MikeH

I can't view pdfs on this computer, but I suspect the layout uses the other half of the dual opamp (probably for layout purposes) and pins 1 and 2 are tied together to 'neutralize' that side of the opamp.  If you check out pins 7 and 8 they probably have that 220K resistor between them.
"Sounds like a Fab Metal to me." -DougH

StereoKills

As I suspected, it had to do with me being up late. I can't believe I didn't think that I was only using one section of a dual op amp. :P

Thank you!
"Sometimes it takes a thousand notes to make one sound"