Slew rate

When applied to the input of a circuit, it instead indicates that the external driving circuitry needs to meet those limits in order to guarantee the correct operation of the receiving device.

If these limits are violated, some error might occur and correct operation is no longer guaranteed.

[1] In other cases, a maximum slew rate is specified[2] in order to limit the high frequency content present in the signal, thereby preventing such undesirable effects as ringing or radiated interference.

[3] In amplifiers, limitations in slew rate capability can give rise to non-linear effects.

The transconductance is typically very high — this is where the large open loop gain of the amplifier is generated.

The second stage of modern power amplifiers is, among other things, where frequency compensation is accomplished.

Slew rate helps us identify the maximum input frequency and amplitude applicable to the amplifier such that the output is not significantly distorted.

Thus it becomes imperative to check the datasheet for the device's slew rate before using it for high-frequency applications.

Slew rate can be deliberately limited using two op amps, a capacitor, and two resistors.

[5] In electronic musical instruments, slew circuitry or software-generated slew functions are used deliberately to provide a portamento (also called glide or lag) feature, where an initial digital value or analog control voltage is slowly transitioned to a new value over a period of time (see interpolation).