How to select an op-amp for a circuit ?

Question

I need some help please all I have for information is High Speed , Power Amp , Osc please help .

Answer 1

The words "Power" and Op-Amp usually don't go together in the same phrase.  There are very few Op-Amps that are truly power amplifiers, as well.  Furthermore, there are even fewer Op-Amps that are both high speed and high power.  Depending on one's definition of high speed and high power -- there may be absolutely none.

Burr-Brown (owned by Texas instruments) has a few:

http://focus.ti.com/paramsearch/docs/par...

Apex has some that you might find useful.

http://apex.cirrus.com/en/products/apex/...

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Answer 2

Needs more information, what's the circuit for?

Look at Maplin for easy to get to electronics and then your favourite search engine for data sheets.

You can then model the result in any of the SPICE programs.

Answer 3

If you mean 'oscillator' for Osc and that's what you're building with your op-amp, then perhaps the high speed portion of your specification is referring to the slew rate of the op-amp.  If that's true then look for op-amps with a high slew rate which means they can handle higher frequency signals without distorting the waveform.