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    Difference between Differentiators and Comparators

    Please, I'm a bit confused about the concept of this two amplifiers. In what ways/why are Differentiators different from comparators?

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    Re: Difference between Differentiators and Comparators

    differentiators produce the differentiation of input signal waveform.
    (i.e. d/dt of input signal)

    comparator compares the voltages between the NonInv and Inv i/ps of opamp and produce a polarised output based on their difference in magniudes.



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    Re: Difference between Differentiators and Comparators

    Hi,

    In addition to what srizbf said, a differentiator detects transitions of the input signal. It produces a spike at the output when the input transitions.

    The comparator output switches from low to high as the input signal increases and equals the reference and from high to low as the input signal decreases and equals the reference. Usually, there is a hysteresis implemented around the reference voltage.
    -------------
    --Akanimo.



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  4. #4
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    Re: Difference between Differentiators and Comparators

    A differential detector is the input stage of a comparator.

    A differentiator performs a calculus function, differentiation. Its the counterpart of integration.



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