3 Replies Latest reply on Nov 1, 2012 3:52 AM by michaelkellett

    Re: Common mode voltage range of comparator

    chaitanya2k6er

      I require a rail to rail comparator with common mode voltage range Vcc+1V, low power and high speed comparator. Suggest me some comparators that meets the requirement. Happy to recieve any kind of suggestions.

        • Re: Common mode voltage range of comparator
          michaelkellett

          First you must define high speed and low power, and while you at it, Vcc (in volts).

          Then suggestions become possible.

          It might be better to explain what you are trying to do - there are few (if any) comparators that can cope with common mode voltages outside the rails and still be considered to be high speed. You may need to consider some novel ways to get round your problem.

           

          Michael Kellett

            • Re: Common mode voltage range of comparator
              chaitanya2k6er

              Vcc can be any range more than 1V and device should be input & output rail to rail comparator. Acutually i need a comparator that works with single supply where the input signal varies from -1V to +0.7V. So i have planned to bias opamp with negative rail and ground the positive supply. So inorder to satisfy the condition i require a comparator that withstand +1V above the VCC. I have googled some comparators but i could not find any comparator with common mode voltage range more than 200mV. So suggest me some comparators that meets the requirment.