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Choosing_OPAMP_01.php   5657 Bytes    21-08-2015 18:56:02


Choosing the right OPAMP



What's All This Slewrate Stuff, Anyhow ?


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.



Slewrate Slewrate
An obviously perfect rectangle ... shows limitations when zooming-in


Enter your requirements below to see what Slew-Rate your Opamp should have ...


Frequency

Amplitude

 Vpp

min. Slew Rate

 V/µs (SINE)

min. Slew Rate

 V/µs (TRIANGLE)

min. Slew Rate

 V/µs (RECTANGLE)






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t1 = 3910 d

t2 = 582 ms

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