How can I determine whether this is a “rail to rail” opamp from its datasheet?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
1
down vote

favorite












I know that rail to rail means that the opamp output can have a swing upto its power rail voltages.



So for a rail to rail opamp lets say if the supply test condition is +-12V, I would assume that the output swing can reach upto +12V or down to -12V.
Similarly with a +-15V supply the swing would reach upto +15V or down to -15V.



But nowhere in this datasheet "rail to rail" phrase is indicated.



In electrical characteristics I can only see some section called "Maximum peak output voltage swing" without any given supply voltage condition.



So briefly, I'm not able to verify whether this opamp is rail to rail and I guess don't know to focus on the right parameters.



How can it be inferred from this datasheet whether this opamp is rail to rail?










share|improve this question

















  • 1




    The table in 6.5 has the Vcc mentioned at the top (+/- 15V)
    – ratchet freak
    30 mins ago










  • I see so can we say it can typically swing between +13.5V and -13.5V for a supply voltage +/- 15V? So not a rail to rail opamp?
    – user1234
    27 mins ago







  • 1




    @ratchetfreak Please keep your answers to the answers section. As you can see, your comment is now starting a possibly lengthy discussion from OP, and you can not edit your comment to clarify, nor can the user accept your answer.
    – pipe
    16 mins ago














up vote
1
down vote

favorite












I know that rail to rail means that the opamp output can have a swing upto its power rail voltages.



So for a rail to rail opamp lets say if the supply test condition is +-12V, I would assume that the output swing can reach upto +12V or down to -12V.
Similarly with a +-15V supply the swing would reach upto +15V or down to -15V.



But nowhere in this datasheet "rail to rail" phrase is indicated.



In electrical characteristics I can only see some section called "Maximum peak output voltage swing" without any given supply voltage condition.



So briefly, I'm not able to verify whether this opamp is rail to rail and I guess don't know to focus on the right parameters.



How can it be inferred from this datasheet whether this opamp is rail to rail?










share|improve this question

















  • 1




    The table in 6.5 has the Vcc mentioned at the top (+/- 15V)
    – ratchet freak
    30 mins ago










  • I see so can we say it can typically swing between +13.5V and -13.5V for a supply voltage +/- 15V? So not a rail to rail opamp?
    – user1234
    27 mins ago







  • 1




    @ratchetfreak Please keep your answers to the answers section. As you can see, your comment is now starting a possibly lengthy discussion from OP, and you can not edit your comment to clarify, nor can the user accept your answer.
    – pipe
    16 mins ago












up vote
1
down vote

favorite









up vote
1
down vote

favorite











I know that rail to rail means that the opamp output can have a swing upto its power rail voltages.



So for a rail to rail opamp lets say if the supply test condition is +-12V, I would assume that the output swing can reach upto +12V or down to -12V.
Similarly with a +-15V supply the swing would reach upto +15V or down to -15V.



But nowhere in this datasheet "rail to rail" phrase is indicated.



In electrical characteristics I can only see some section called "Maximum peak output voltage swing" without any given supply voltage condition.



So briefly, I'm not able to verify whether this opamp is rail to rail and I guess don't know to focus on the right parameters.



How can it be inferred from this datasheet whether this opamp is rail to rail?










share|improve this question













I know that rail to rail means that the opamp output can have a swing upto its power rail voltages.



So for a rail to rail opamp lets say if the supply test condition is +-12V, I would assume that the output swing can reach upto +12V or down to -12V.
Similarly with a +-15V supply the swing would reach upto +15V or down to -15V.



But nowhere in this datasheet "rail to rail" phrase is indicated.



In electrical characteristics I can only see some section called "Maximum peak output voltage swing" without any given supply voltage condition.



So briefly, I'm not able to verify whether this opamp is rail to rail and I guess don't know to focus on the right parameters.



How can it be inferred from this datasheet whether this opamp is rail to rail?







op-amp datasheet rail-to-rail






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 34 mins ago









user1234

475822




475822







  • 1




    The table in 6.5 has the Vcc mentioned at the top (+/- 15V)
    – ratchet freak
    30 mins ago










  • I see so can we say it can typically swing between +13.5V and -13.5V for a supply voltage +/- 15V? So not a rail to rail opamp?
    – user1234
    27 mins ago







  • 1




    @ratchetfreak Please keep your answers to the answers section. As you can see, your comment is now starting a possibly lengthy discussion from OP, and you can not edit your comment to clarify, nor can the user accept your answer.
    – pipe
    16 mins ago












  • 1




    The table in 6.5 has the Vcc mentioned at the top (+/- 15V)
    – ratchet freak
    30 mins ago










  • I see so can we say it can typically swing between +13.5V and -13.5V for a supply voltage +/- 15V? So not a rail to rail opamp?
    – user1234
    27 mins ago







  • 1




    @ratchetfreak Please keep your answers to the answers section. As you can see, your comment is now starting a possibly lengthy discussion from OP, and you can not edit your comment to clarify, nor can the user accept your answer.
    – pipe
    16 mins ago







1




1




The table in 6.5 has the Vcc mentioned at the top (+/- 15V)
– ratchet freak
30 mins ago




The table in 6.5 has the Vcc mentioned at the top (+/- 15V)
– ratchet freak
30 mins ago












I see so can we say it can typically swing between +13.5V and -13.5V for a supply voltage +/- 15V? So not a rail to rail opamp?
– user1234
27 mins ago





I see so can we say it can typically swing between +13.5V and -13.5V for a supply voltage +/- 15V? So not a rail to rail opamp?
– user1234
27 mins ago





1




1




@ratchetfreak Please keep your answers to the answers section. As you can see, your comment is now starting a possibly lengthy discussion from OP, and you can not edit your comment to clarify, nor can the user accept your answer.
– pipe
16 mins ago




@ratchetfreak Please keep your answers to the answers section. As you can see, your comment is now starting a possibly lengthy discussion from OP, and you can not edit your comment to clarify, nor can the user accept your answer.
– pipe
16 mins ago










3 Answers
3






active

oldest

votes

















up vote
2
down vote













Most manufacturers specifically label their op-amps to be "rail-to-rail" if they're capable of such.



Under Typical Characteristics, Figure 2 shows you what the output voltage is for a given VCC. So for a VCC of 15V, the best output you'll get is approx ~+12V.



So it is not a rail-to-rail op-amp.



enter image description here






share|improve this answer



























    up vote
    2
    down vote













    Try this: -



    enter image description here



    For a power rail of +/- 15 volts the input common mode range is only guaranteed to be +/- 11 volts.



    For a light load on the output pin (10 kohm) the output is only guaranteed to swing +/- 12 volts.



    An R2R op-amp will never output swing completely to the rails but you could expect it to get within 100 mV on a light load.



    Conclusion - this op-amp is NOT an R2R device.






    share|improve this answer




















    • Max peak output voltage is more straightforward. But what is really meant by "common mode input voltage range" in this context?
      – user1234
      6 mins ago

















    up vote
    0
    down vote













    Vicr and Vom are the parameters to look at. In a rail to rail op amp, these will go all the way to the rails. The table lists the supply voltage at the top (+/- 15v). Spoiler alert : this is definitely not a rail to rail op amp.






    share|improve this answer




















      Your Answer




      StackExchange.ifUsing("editor", function ()
      return StackExchange.using("mathjaxEditing", function ()
      StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
      StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["\$", "\$"]]);
      );
      );
      , "mathjax-editing");

      StackExchange.ifUsing("editor", function ()
      return StackExchange.using("schematics", function ()
      StackExchange.schematics.init();
      );
      , "cicuitlab");

      StackExchange.ready(function()
      var channelOptions =
      tags: "".split(" "),
      id: "135"
      ;
      initTagRenderer("".split(" "), "".split(" "), channelOptions);

      StackExchange.using("externalEditor", function()
      // Have to fire editor after snippets, if snippets enabled
      if (StackExchange.settings.snippets.snippetsEnabled)
      StackExchange.using("snippets", function()
      createEditor();
      );

      else
      createEditor();

      );

      function createEditor()
      StackExchange.prepareEditor(
      heartbeatType: 'answer',
      convertImagesToLinks: false,
      noModals: false,
      showLowRepImageUploadWarning: true,
      reputationToPostImages: null,
      bindNavPrevention: true,
      postfix: "",
      onDemand: true,
      discardSelector: ".discard-answer"
      ,immediatelyShowMarkdownHelp:true
      );



      );













       

      draft saved


      draft discarded


















      StackExchange.ready(
      function ()
      StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f398784%2fhow-can-i-determine-whether-this-is-a-rail-to-rail-opamp-from-its-datasheet%23new-answer', 'question_page');

      );

      Post as a guest






























      3 Answers
      3






      active

      oldest

      votes








      3 Answers
      3






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes








      up vote
      2
      down vote













      Most manufacturers specifically label their op-amps to be "rail-to-rail" if they're capable of such.



      Under Typical Characteristics, Figure 2 shows you what the output voltage is for a given VCC. So for a VCC of 15V, the best output you'll get is approx ~+12V.



      So it is not a rail-to-rail op-amp.



      enter image description here






      share|improve this answer
























        up vote
        2
        down vote













        Most manufacturers specifically label their op-amps to be "rail-to-rail" if they're capable of such.



        Under Typical Characteristics, Figure 2 shows you what the output voltage is for a given VCC. So for a VCC of 15V, the best output you'll get is approx ~+12V.



        So it is not a rail-to-rail op-amp.



        enter image description here






        share|improve this answer






















          up vote
          2
          down vote










          up vote
          2
          down vote









          Most manufacturers specifically label their op-amps to be "rail-to-rail" if they're capable of such.



          Under Typical Characteristics, Figure 2 shows you what the output voltage is for a given VCC. So for a VCC of 15V, the best output you'll get is approx ~+12V.



          So it is not a rail-to-rail op-amp.



          enter image description here






          share|improve this answer












          Most manufacturers specifically label their op-amps to be "rail-to-rail" if they're capable of such.



          Under Typical Characteristics, Figure 2 shows you what the output voltage is for a given VCC. So for a VCC of 15V, the best output you'll get is approx ~+12V.



          So it is not a rail-to-rail op-amp.



          enter image description here







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 24 mins ago









          John Go-Soco

          1783




          1783






















              up vote
              2
              down vote













              Try this: -



              enter image description here



              For a power rail of +/- 15 volts the input common mode range is only guaranteed to be +/- 11 volts.



              For a light load on the output pin (10 kohm) the output is only guaranteed to swing +/- 12 volts.



              An R2R op-amp will never output swing completely to the rails but you could expect it to get within 100 mV on a light load.



              Conclusion - this op-amp is NOT an R2R device.






              share|improve this answer




















              • Max peak output voltage is more straightforward. But what is really meant by "common mode input voltage range" in this context?
                – user1234
                6 mins ago














              up vote
              2
              down vote













              Try this: -



              enter image description here



              For a power rail of +/- 15 volts the input common mode range is only guaranteed to be +/- 11 volts.



              For a light load on the output pin (10 kohm) the output is only guaranteed to swing +/- 12 volts.



              An R2R op-amp will never output swing completely to the rails but you could expect it to get within 100 mV on a light load.



              Conclusion - this op-amp is NOT an R2R device.






              share|improve this answer




















              • Max peak output voltage is more straightforward. But what is really meant by "common mode input voltage range" in this context?
                – user1234
                6 mins ago












              up vote
              2
              down vote










              up vote
              2
              down vote









              Try this: -



              enter image description here



              For a power rail of +/- 15 volts the input common mode range is only guaranteed to be +/- 11 volts.



              For a light load on the output pin (10 kohm) the output is only guaranteed to swing +/- 12 volts.



              An R2R op-amp will never output swing completely to the rails but you could expect it to get within 100 mV on a light load.



              Conclusion - this op-amp is NOT an R2R device.






              share|improve this answer












              Try this: -



              enter image description here



              For a power rail of +/- 15 volts the input common mode range is only guaranteed to be +/- 11 volts.



              For a light load on the output pin (10 kohm) the output is only guaranteed to swing +/- 12 volts.



              An R2R op-amp will never output swing completely to the rails but you could expect it to get within 100 mV on a light load.



              Conclusion - this op-amp is NOT an R2R device.







              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered 22 mins ago









              Andy aka

              231k10171392




              231k10171392











              • Max peak output voltage is more straightforward. But what is really meant by "common mode input voltage range" in this context?
                – user1234
                6 mins ago
















              • Max peak output voltage is more straightforward. But what is really meant by "common mode input voltage range" in this context?
                – user1234
                6 mins ago















              Max peak output voltage is more straightforward. But what is really meant by "common mode input voltage range" in this context?
              – user1234
              6 mins ago




              Max peak output voltage is more straightforward. But what is really meant by "common mode input voltage range" in this context?
              – user1234
              6 mins ago










              up vote
              0
              down vote













              Vicr and Vom are the parameters to look at. In a rail to rail op amp, these will go all the way to the rails. The table lists the supply voltage at the top (+/- 15v). Spoiler alert : this is definitely not a rail to rail op amp.






              share|improve this answer
























                up vote
                0
                down vote













                Vicr and Vom are the parameters to look at. In a rail to rail op amp, these will go all the way to the rails. The table lists the supply voltage at the top (+/- 15v). Spoiler alert : this is definitely not a rail to rail op amp.






                share|improve this answer






















                  up vote
                  0
                  down vote










                  up vote
                  0
                  down vote









                  Vicr and Vom are the parameters to look at. In a rail to rail op amp, these will go all the way to the rails. The table lists the supply voltage at the top (+/- 15v). Spoiler alert : this is definitely not a rail to rail op amp.






                  share|improve this answer












                  Vicr and Vom are the parameters to look at. In a rail to rail op amp, these will go all the way to the rails. The table lists the supply voltage at the top (+/- 15v). Spoiler alert : this is definitely not a rail to rail op amp.







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 24 mins ago









                  alex.forencich

                  31.5k14683




                  31.5k14683



























                       

                      draft saved


                      draft discarded















































                       


                      draft saved


                      draft discarded














                      StackExchange.ready(
                      function ()
                      StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f398784%2fhow-can-i-determine-whether-this-is-a-rail-to-rail-opamp-from-its-datasheet%23new-answer', 'question_page');

                      );

                      Post as a guest













































































                      Comments

                      Popular posts from this blog

                      What does second last employer means? [closed]

                      List of Gilmore Girls characters

                      Confectionery