I want to make a recover PWM circuit. Frequency of triangle wave is 15MHz. Can you show me a circuit for this job? I found this circuit (figure b)

Can I use OPA705? I read it's datasheet and see that it's GBW just 1MHz. Is that satisfying for 15MHz of input signal?
I hope you will help me. Thank you^^

 

What is the signal you are trying to recover?

Audio?

Video?

 

What is the signal you are trying to recover?

Audio?

Video?

That is video signal (figure b). Can you help me?

 

Help me!!!

 

Can I use OPA705? I read it's datasheet and see that it's GBW just 1MHz. Is that satisfying for 15MHz of input signal?

No. Gain-bandwidth product of 1MHz means the gain can't be more than 1 (ie. unity) at 1MHz. Which means 15MHz will be attenuated.

 

Help me!!!

Don't you mean "Help me, please."?

No, you help me. The description of the problem is very poor. You assume that a bad picture of a pc board will tell us everything you already know. It doesn't.

What do you mean by "recover". Recover what? Why? What is your application? What power supplies are available to power the circuit? What kind of output do you want? Are you just converting a pulsed light stream into electrical pulses, do you want to convert the signal back to real video, or what?

ak