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An op-amp, having a slew rate of 62.8 V/msec, is connected in a voltage follower configuration. If maximum amplitude of the input sinusoid is 10 V, then minimum frequency at which slew rate limited distortion would set in at the output is _________ MHz
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Correct Option: A
Input, Vs = Vm sin ωt
Here, Vm = 10V
In a voltage follower, output voltage, V0 = Vs (input voltage)
∴ V0 = Vm sin ωt
| Slew rate = | = ω Vm cosωt | |
| dt |
| Maximum | = ω Vm ≥ s [gain] | |
| dt |
⇒ 2πfVm ≥ s
| ⇒ f ≥ | ≥ | ≥ 106 MHz | ||
| 2π Vm | 10-6 × 6.28 × 10 |
fmin = 1 MHz
