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Elusive IC

Started by MullisMan, March 04, 2010, 02:43:37 PM

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MullisMan

March 04, 2010, 02:43:37 PM
Has anybody heard of a 4557 op amp?  I've tried looking for it and I can't locate any.  I saw one in a schematic for an Xotic AC booster but it's eluded me so far.
With the fire in my bones.

aron

#1
March 04, 2010, 02:55:45 PM
Maybe it's a typo and it's a 4558

MullisMan

#2
March 04, 2010, 02:57:43 PM
Could be. I'm going to try it with the 4558 in there and see how it turns out.  Any suggestions for other opamps to try?
With the fire in my bones.

aron

#3
March 04, 2010, 02:59:40 PM
TL072. But I like the RC4558 Ti chips. Always have.

R.G.

#4
March 04, 2010, 03:48:03 PM
I remember seeing RC4557s. Same Ratheon family or naming scheme as the RC4558. Long ago and far away.
R.G.

In response to the questions in the forum - PCB Layout for Musical Effects is available from The Book Patch. Search "PCB Layout" and it ought to appear.

Ed G.

#5
March 04, 2010, 05:18:59 PM
Maybe it was a blurred out 4559? I've tried those and liked 'em.
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