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Circuit equivalent to 4557D

 
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Ghost Tweaker



Joined: 11 Nov 2003
Posts: 94
Post16 Jun 2008 19:41   Circuit equivalent to 4557D
Hi everyone,

I'm designing a distortion pedal. In the schematic there's a dual opamp labelled 4557D. However, I can't find information on this device on the web. Does anyone know the complete name of this device or a possible replacement?

Thanx in advance for the help
Ghostea
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casper



Joined: 12 Jan 2003
Posts: 32
Helped: 1
Location: france
Post19 Jun 2008 15:18   Re: Circuit equivalent to 4557D
For distortion pedal, you can use a generic dual op-amp like lm358, 1458 or tl082.
If you want low noise, use a tl072.

Generally, a guitard pedal is powered with a 9v battery and a rail to rail op-amp is a good choice.

Bye.
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