Transcription of Introduction to comparators, their parameters and basic ...
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October 2012 Doc ID 022939 Rev 11/27AN4071 Application noteIntroduction to comparators , their parameters and basicapplicationsBy Radim SmatIntroductionAfter operational amplifiers (op amps), comparators are the most generally used analog, simple integrated amplifiers are well described in many publications and a lot of information can be found regarding the design and proper use of these devices. On the other hand, information concerning comparators is much harder to find as they are often considered as simple devices. This note explains the main parameters of comparators and their limitations from an application point of and TS334 micropower low-voltage rail-to-rail ID 022939 Rev 1 Contents1 Comparator substitution by an op amp .. 42 Comparator parameters .. 5 Comparator classification by major parameters .. 53 Datasheet parameters .. common mode voltage range - VICM .. offset voltage - VIO (VTRIP) .. and SVR .. gain.
use a dual channel (or quad channel) op amp which can save space in the application. This is possible even if a better alternative is to use comparators that are optimized for this purpose. The op amp is a device which is designed to be used with negative feedback. A major concern is to ensure the stability of such a configuration.
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