Clear explanation of slew rate

i'm reading huijsing's operational amplifiers,but i can't understand his description on slew rate.
Could somebody give me a simple and clear description?
i think allen or gray's book is too simple
thanks a lot

Slew rate,for help!

Slew rate is defined by the current to charge the compersation cap.
Q=CV
I*t=CV
I/C=V/t=slew rate

Re: Slew rate,for help!

For an operational amplifier there are two distinct (and not corellated parameters): frequency badwith and slew rate.

Slew rate it tells you how fast is the answer of the OA output to an ideal rectangular input signal. Slew rate is not an ideal term, so the output rising edge and the output falling edges may have different slew rate for an rectangular input signal with equal rising and falling edges.

https://en.wikipedia.org/wiki/Slew_rate

Frequency bandwith is telling the characteristic of the OA for small signal response till -3dB amplitude using sinusoidal signals.

Note and don't forget, a high frequency bandwith does not mean a high slewrate.
You may see OA with 5000V/uS slew rate and frequency bandwith of 200MHz and OA with 500V/uS slewrate and 1Ghz bandwith as well.

Slew rate,for help!

thanks for your help