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Re: [Using rail-to-rail opamps around ground]

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  • Stig S.Nielsen
    Have a peek at Maxim circuits Max471/472. Might give you some ideas Stig fatcity!root@news.cts.com wrote: I m having a problem using a rail-to-rail cmos op as
    Message 1 of 1 , Dec 1, 1998
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      Have a peek at Maxim circuits Max471/472. Might give you some ideas

      Stig


      fatcity!root@... wrote:
      I'm having a problem using a rail-to-rail cmos op as a differential
      amplifier to measure current in the ground leg of a circuit,. The
      problem seems to be that no opamp without a -ve supply can swing its
      output to better than tens of millivolts above ground when the output
      needs to be zeor, i.e. no voltage across the current sense resistor in
      my application. Any suggestions for a way around this?

      Thanks

      Peter
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      Author: Peter Vogel
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