Select the most appropriate mitigation technique to eliminate the edge oscillation in an op-amp based comparator circuit that is influenced by low-amplitude high-frequency sinusoidal noise.

Question

Select the  most appropriate  mitigation technique to eliminate the edge oscillation in an op-amp based comparator circuit that is influenced by low-amplitude high-frequency sinusoidal noise.

Accepted Answer

Add hysteresis (positive feedback) to create a deadband around the switching threshold so small perturbations cannot cause multiple crossings.

Answer

Add a capacitor in parallel with the input to dampen high frequency oscillations.

Answer

Use an op-amp with a higher open-loop gain to make switching faster

Answer

Use an op-amp with a lower open-loop gain so that low amplitude noise doesn’t get amplified above the switching threshold

Answer

Use a bandpass filter to filter out the high frequency noise.

Answer

Increase the amplitude of the input signal using a second op-amp in a non-inverting amplifier configuration.

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Select the most appropriate mitigation technique to eliminate the edge oscilla...

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