Review Suggested Edit

You can't approve or reject suggested edits because you haven't yet earned the Edit Posts ability.

Is it possible to calculate the rise/fall time of an operational amplifier ?

Hi guys so i am planning to use LM318 operational amplifier to generate a pwm signal and i need to know how to calculate the rise/fall time thank you.
[LM318/LM218/LM118 datasheet](https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.ti.com/lit/gpn/LM318-N&ved=2ahUKEwjN7LqX6L77AhUYVaQEHYrCCPQQFnoECA0QAQ&usg=AOvVaw2teDo15HVgRulQWeLnMu54)
~~**Edit:**~~
~~-The slew rate is 70v/ųs max.~~
~~-Slew rate can reach 150v/ųs~~
~~But with a condition of"feedforward compensation will boost the slew rate to over~~
~~150V/μs and almost double the bandwidth."~~
~~**Edit2:**~~
~~As suggested from Mr. Olin here my calculation:~~
~~the LM318 offer 70v/ųs and the output voltage that i need is 18v so:~~
~~(18 V) / (70V/µs) = 0.257143 ųs = 257.143 ns.~~
~~And then i did this:~~
(257.143/5)×4 = 205.714 ns.
~~Because rise/fall time start at 10% and end at 90%.~~
~~And in case of 150v/ųs this gonna be:~~
(18 V) / (150 V/µs) = 0.12 µs = 120 ns
~~(120/5)×4 = 96ns.~~
Is my calculation correct? Thank you.

I am planning to use the LM318 operational amplifier to generate a PWM signal and I need to know how to calculate the rise/fall time.
[LM318/LM218/LM118 datasheet](https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.ti.com/lit/gpn/LM318-N&ved=2ahUKEwjN7LqX6L77AhUYVaQEHYrCCPQQFnoECA0QAQ&usg=AOvVaw2teDo15HVgRulQWeLnMu54)
-The slew rate is 70 V/µs maximum
-Slew rate can reach 150 V/µs
But with a condition of "feedforward compensation will boost the slew rate to over
150 V/μs and almost double the bandwidth."
As suggested from Mr. Olin, here is my calculation:
the LM318 offers 70 V/µs and the output voltage that I need is 18 V so:
(18 V) / (70 V/µs) = 0.257143 µs = 257.143 ns.
And then I did this:
(257.143/5)×4 = 205.714 ns.
Because the rise/fall time start at 10% and end at 90%.
And in case of 150 V/µs this is going to be:
(18 V) / (150 V/µs) = 0.12 µs = 120 ns
(120/5)×4 = 96 ns.
Is my calculation correct?

opamp