LM318 should work shouldn't it?

[Milo]

I need an op amp that can give me a gain of +/-3 and handle a square
wave with a frequency range of 1kHz to 1MHz.

The LM318 has a GBW of 15MHz and a really high slew rate but I cannot
get it to work. I cannot even get it to work as a unity gain inverter.
I'm not familiar with the balance/compensation inputs on an op amp and
I cannot find any literature that talks about them. What should I do
with these? Do the have to be used? Is there another amp that suit my
needs?

 

[martin griffith]

I need an op amp that can give me a gain of +/-3 and handle a square
wave with a frequency range of 1kHz to 1MHz.

a gain of + and -3 at the same time?

The LM318 has a GBW of 15MHz and a really high slew rate but I cannot
get it to work. I cannot even get it to work as a unity gain inverter.
I'm not familiar with the balance/compensation inputs on an op amp and
I cannot find any literature that talks about them. What should I do
with these? Do the have to be used? Is there another amp that suit my
needs?

martin

 

[Pooh Bear]

I need an op amp that can give me a gain of +/-3 and handle a square
wave with a frequency range of 1kHz to 1MHz.

Of what amplitude ?

The LM318 has a GBW of 15MHz and a really high slew rate but I cannot
get it to work. I cannot even get it to work as a unity gain inverter.

How familiar are you with op-amp circuits ?

I'm not familiar with the balance/compensation inputs on an op amp and
I cannot find any literature that talks about them. What should I do
with these? Do the have to be used?

They don't have to be used.

Have you got this ?

http://cache.national.com/ds/LM/LM118.pdf

Is there another amp that suit my needs?

Doubtless but if you can't get the 318 to work you clearly have a more
basic problem.

Can you post a schematic using ascii here or a graphics file at
alt.binaries.schematics.electronics pls.

Graham

 

[petrus bitbyter]

I need an op amp that can give me a gain of +/-3 and handle a square
wave with a frequency range of 1kHz to 1MHz.

The LM318 has a GBW of 15MHz and a really high slew rate but I cannot
get it to work. I cannot even get it to work as a unity gain inverter.
I'm not familiar with the balance/compensation inputs on an op amp and
I cannot find any literature that talks about them. What should I do
with these? Do the have to be used? Is there another amp that suit my
needs?

Guess an LM318 will do fine once you get it to work, assuming the voltages
and impedances you need are not extreme. But the first thing you need is a
good datasheet. Just Google for it. Then you should be able to read it and -
worse - to understand what you read. You'll find some examples in the
datasheet as well. Unless you're totally new to electronics you'll find out
what you need. For more help, we'll need more info. Some more specs and/or a
schematic of the circuit you want to build.

petrus bitbyter

 

[colin]

I need an op amp that can give me a gain of +/-3 and handle a square
wave with a frequency range of 1kHz to 1MHz.

The LM318 has a GBW of 15MHz and a really high slew rate but I cannot
get it to work. I cannot even get it to work as a unity gain inverter.
I'm not familiar with the balance/compensation inputs on an op amp and
I cannot find any literature that talks about them. What should I do
with these? Do the have to be used? Is there another amp that suit my
needs?

in what way is it not working ?
what is the output ... high, low, zero , oscilating ?
what are the voltages on the + and - inputs ?

Colin =^.^=

 

[Ban]

I need an op amp that can give me a gain of +/-3 and handle a square
wave with a frequency range of 1kHz to 1MHz.

The LM318 has a GBW of 15MHz and a really high slew rate but I cannot
get it to work. I cannot even get it to work as a unity gain inverter.
I'm not familiar with the balance/compensation inputs on an op amp and
I cannot find any literature that talks about them. What should I do
with these? Do the have to be used? Is there another amp that suit my
needs?

If you just try to increase the output voltage of a digital device (square
wave) it might be better to get a HCMOS level translator(buffer) with
Schmitt-trigger input.
An analog amp is apparently not so easy to use, it requires a good layout
and some external parts especially when driving large capacitive loads like
gates of Mosfets.