Slew Rate

Slew rate (SR) is the maximum rate of change (slope) of the output voltage. For instance, a specification of 5 V/μs means that in 1 μs, the maximum rate of output change cannot be more than ±5V.

In an op-amp datasheet, the slew rate is typically expressed in the terms of V/μs and it tells you how fast the output of the op-amp can follow its input.

Refer to the voltage follower below, when given a stop input from 0V to 5V, see what happened at the output.

SlewRate.png

Rising time usually refers to the time it takes for a voltage to rise from 10% to 90% of its peak value.
Falling time usually refers to the time it takes for a voltage to rise from 90% to 10% of its peak value.

SlewRateSpecs.png

Amp-titudes Episode 1 - Amplifier Bandwidth and Slew Rate

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