Choosing an OPAMP based on the Gain-Bandwidth-Product only works for small signals.
If you want to use the full range, notably at frequencies larger than DC, you must also consider the Slewrate.
This utility lets you estimate the required Slew-Rate for a given Signal / Frequency.
An obviously perfect rectangle ...
shows limitations when zooming-in
Enter your requirements below to see what Slew-Rate your Opamp should have ...
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