Op-amp null offset?

very large difference between them. and very same between them.

one is 14pins and another is 8pins. one is 4op and antoher is 2ops. they are all compansated inner. in the most applications they can altante. but pay attation to thwir pin location. and 3240 has more input resitance. and has more benefit to 324.

why not refer to manual yourself?

They are completely different integrated circuits.

Its a bit like saying "what is the difference between a VCR and a radio?"

?????

No it is not like saying the difference between a radio and a VCR gizmo, radio is a super hetrodyne thing a VCR is a magnetic mechanical thing yeah they have amplifiers. The two IC Op amps they are talking about have the same designs on the op amps no differenc except one had two amplifiers the other has 4 amplifiers each op amp unit is the same in both but have different pinouts see the thing is you can get more gain and less noise ganging four in series but if you use only one two amplifier stages you can use one or the other chip. Who wants to have four cars instead of one, well I do but if I use one at a time it is more expensive and uses up more parking space to have four cars. So, I might settle on two cars unless I had a family to lend some of the cars to. See what I am getting at.

There is so much gain on each stage depending on the slew rate so more gain less noise on four stages. Go to Forrest Mims II for your pinout.

Hello Guest,

There can be a lot of difference depending on your specifications. They are both Op-Amps, but they have different electrical characteristics. They also have different structures.

The CA3240 is a BiMOS Operational Amplifier with MOSFET Input/Bipolar Output with 2 "channels".

Datasheet: http://www.intersil.com/data/fn/fn1050.pdf

The LM324 is an older, general-purpose Op-Amp having 4 "channels".

Datasheet: http://www.fairchildsemi.com/ds/LM/LM324.pdf

I suggest comparing the Electrical Characteristics from the datasheets in light of your product design and choose the one best suited.

Mike