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  • TI Thinks Resolved

AMC1100: AMC1100

Part Number: AMC1100

Hello,

 I want to sense 3 Ph voltage and also display that voltage on LCD.I am go through the data sheet of AMC1100 but I have doubt so I am post this question.Can I go ahead with this  IC or an other option for this.Also I have to check Phase sequence of 3 Ph corect or not. Please give suggestion.

Thank You

  • Hi Amruta,

    The AMC1100 is an isolation amplifier which was designed primarily for current sensing operations using a small value shunt. While you can measure voltage with the device using a resistive divider to get down to the +/-250mV input range of the AMC1100, you might want to look at the AMC1311 instead - it has a larger input voltage range and is better suited for doing voltage measurements. Of coarse to display voltages on an LCD, you would have to digitize the output and do a little post processing in a micro.

     

    Regards,

    Tom

  • In reply to Tom Hendrick:

    Is there a reference design showing the AMC1311 used for phase voltage measurement?

  • In reply to Andy Reigle:

    Hi Andy,

    Use this link and scroll down to 'Reference Designs': www.ti.com/.../toolssoftware

     

    Regards,

    Tom

  • In reply to Tom Hendrick:

    Thanks Tom.

    I've only seen the 1311 used in the datasheet and reference designs for monitoring the DC bus. I'd like to use the 1311 for phase to DC minus voltage measurement or would another TI part be better suited for that?

    Regards,
    Andy
  • In reply to Andy Reigle:

    Hi Andy,

    We'll have a bipolar input device coming out later this year, if you'd like more detail on that, let me know and I'll send you a note offline.

     

    Regards,

    Tom

  • In reply to Tom Hendrick:

    Yes.  Thanks!  

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