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What are the contrast between operational amplifier and comparators?

Latest Updated:03/01/2007

Question:

What are the differences between operational amplifiers and comparators?

Answer:

The basic configuration is the same but there are the following differences.

  Operational Amplifier Comparator
Basic operation Amplification Comparison
Input signal
Output signal
Output stage configuration Push-pull Open collector/drain
Features Difficult to oscillate Easy to oscillate during amplification operation
Phase correction capacitor Provided Not provided
Pulse response characteristic Slow (defined as slew rate) Fast (defined as 50% output delay)
Suitable Products
Comparators