Op-Amp Recommendation

[Tenson]

Hi guys,

I need a quad op-amp that can run on a single-rail supply. It needs to be cheap.

I know I can bias any op-amp to run on a single rail but in this application I would need 8 separate voltage references for each stage as my circuit uses 2 quad chips. I can't use a single reference because that would link the input of each stage.

Something like AD824 might be nice for this application which is an active xover, but it is expensive.

Found LM324, MC3404, but no idea how these will work in audio use for an active crossover? Can't see mention of input voltage and current noise or THD. Just found TL974 that says rail-to-rail but not sure it fully includes the negative rail I haven't time to look as I'm going to a concert now!

 

[mikely]

The TL974 looks like a good solution. This is presumably a new version of the old TL074. You may find this note of interest:

http://www.analog.com/static/imported-files/application_notes/AN-581.pdf

JRC do a good range of dual and quad op-amps including 'single supply' versions. See: http://semicon.njr.co.jp/eng/product/opamp/low_noise/index.html

 

[Tenson]

Thanks. NJM2747 looks good but where to get them, and how much?

 

[Chumpy]

All of the best with suitable safe enjoyment.

 

[Tenson]

Hey?