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Reg : AD677BD ( ADC IC )

I have worked with AD677BD ADC IC, In this Ic its default generated the BUSY signal is High. And then its not converted the analog value into the digital value. I need some detailed information of that ADC Ic (BUSY Signal). Kindly give the valuable feedback.

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  • Hi Maria,

       Please make sure that supply pins , VEE, VDD and Vref have the correct voltage level and also ensure that all ground pins were connected. You can then perform calibration or conversion. Please refer to page 8 of the AD677 datasheet. 

    Regards,

    Jonathan

  • Hi Jonathan,

    ( We are using Mil grade part of the AD677 IC)

    After making sure about all the supplies and ground pins connection. conversion works fine in normal and +60 Deg temperature.  

    We are observing the BUSY line high during cold testing at (-50 deg) for about 5min, later it works properly .During those five minutes we are not receiving any conversion data. We already ensured that all other pins are biased as per suggested. 

    Please address the issue as soon as possible

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  • Hi Jonathan,

    ( We are using Mil grade part of the AD677 IC)

    After making sure about all the supplies and ground pins connection. conversion works fine in normal and +60 Deg temperature.  

    We are observing the BUSY line high during cold testing at (-50 deg) for about 5min, later it works properly .During those five minutes we are not receiving any conversion data. We already ensured that all other pins are biased as per suggested. 

    Please address the issue as soon as possible

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