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university:courses:electronics:text:chapter-4 [31 Aug 2013 16:28]
_deletedUser0_ [4: Op Amp applications - Advanced topics]
university:courses:electronics:text:chapter-4 [06 Jun 2017 16:52] (current)
_deletedUser0_ [Section Summary]
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 Operational amplifiers are not designed to be used as comparators,​ so this section has been, intentionally,​ a little discouraging. Nevertheless there are some cases where the use of an op amp as a comparator is a useful engineering decision-what is important is to make it a considered decision, and ensure that the op amp chosen will perform as expected. To do this it is necessary to read the manufacturer'​s data sheet carefully, to consider the effects of non-ideal op amp performance,​ and to calculate the effects of op amp parameters on the overall circuit. Since the op amp is being used in a non-standard manner some experimentation may also be necessary, since the amplifier used for the experiment will not necessarily be typical and the results of experiments should always be interpreted somewhat pessimistically. Operational amplifiers are not designed to be used as comparators,​ so this section has been, intentionally,​ a little discouraging. Nevertheless there are some cases where the use of an op amp as a comparator is a useful engineering decision-what is important is to make it a considered decision, and ensure that the op amp chosen will perform as expected. To do this it is necessary to read the manufacturer'​s data sheet carefully, to consider the effects of non-ideal op amp performance,​ and to calculate the effects of op amp parameters on the overall circuit. Since the op amp is being used in a non-standard manner some experimentation may also be necessary, since the amplifier used for the experiment will not necessarily be typical and the results of experiments should always be interpreted somewhat pessimistically.
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 +**ADALM1000 Lab Activity [[university:​courses:​alm1k:​alm-lab-comp|Comparators]]**
  
 =====4.9 Operational amplifier Schmitt trigger===== =====4.9 Operational amplifier Schmitt trigger=====
university/courses/electronics/text/chapter-4.txt · Last modified: 06 Jun 2017 16:52 by dmercer