opa549 E/S

[jaudio]

Has anyone used a led on pin 9 to monitor thermal shutdown? How is it wired
end connected to pin 9 and one end to pin 6?

What's the bandwidth for a voltage gain of 21?

 

[pinkmouse]

All the info you need is in the datasheet...

 

[jaudio]

Is that figure 10 on the datasheet but without 74hct04?

I see gain-bandwidth product and slew rate vs temperate but not the bandwidth at a certain gain.

 

[pinkmouse]

I suspect they use the gate to get clean switching, the e/s pin output may be a little messy to drive the LED direct. The pdf is on my other machine, but I seem to remember that gain v. frequency is on the first page of graphs.

 

[jaudio]

gain v. frequency is not on the datasheet I have.

Under figure 4 it reads" External logic circuitry or an led can be used to indicate if the output has been thermally shutdown"

 

[pinkmouse]

I will have a look later when I get back home.

 

[Alcaid]

Gain vs. Freq. and phase:

 

[pinkmouse]

Thanks mate, I was fairly sure it wasn't my imagination!

 

[jaudio]

My apologies, I was wrong.

 

[pinkmouse]

No probs. Sometimes we all can't see the wood for the trees...