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differential amplifier common mode output

Dear sir,
We are using ADA4927-1 device for our application. In our application input to ADA4927-1 is form a sensor having 
output in Differential mode. we want an output from ADA4927-1 in common mode configuration. we have gone through 
the AN-584 APPLICATION NOTE and we uderstand that we need to give input to PIN No. 2 VOCM form a potential divider.
we request you to give the information  how to take output from ADA4927-1 in common mode ( ie What to do for one of the unused 
pin No. 10 or 11 of ADA4927-1) and potential divider voltage to be  given to Pin. No. 2 of the Ada4927-1 for getting the common mode output.

please do the needful to me....


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  • Hello Dwijen,

    What is the circuit configuration? What is the gain? What are the values of the feedback resistors? What is the maximum allowable offset in your application? Can the system be calibrated? Are you comfortable sharing a copy of your schematic? I think that would make it easier for us to provide a good answer.

    In general, the total offset observed in the output will be a result of many factors. Commonly, input offset voltage, input bias current, source resistance and gain will directly affect it.

    Best regards,

    Gustavo

Reply
  • Hello Dwijen,

    What is the circuit configuration? What is the gain? What are the values of the feedback resistors? What is the maximum allowable offset in your application? Can the system be calibrated? Are you comfortable sharing a copy of your schematic? I think that would make it easier for us to provide a good answer.

    In general, the total offset observed in the output will be a result of many factors. Commonly, input offset voltage, input bias current, source resistance and gain will directly affect it.

    Best regards,

    Gustavo

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