AD5560 MEASOUT in Voltage mode drift

Seems that when in Measure Voltage mode the Measure-out pin voltage drifts.

There is no drift when in Measure Current or any other measure mode.

Drift can be excessive (beyond the range) even when all connections to HF and HS are removed.

Replacing the AD5560 eliminates the drift.

Anyone else seen this ?

Could this be a function of the solder reflow profile ?

Thanks

  • 0
    •  Analog Employees 
    on Jul 25, 2016 7:27 PM

    Hi jChakuroff,

     

    For the Measure out voltage to drift, you would usually suspect the thermal considerations of the AD5560 or the thermal drift of the DUT side, this dependent on which is consuming more power or generating more heat. For us to help you I may need additional info on how you are using the AD5560. Are you using the AD5560 Eval Board? (This could help me in correlating what you are seeing on bench)

     

     

    How do you mean by replacing the AD5560 eliminates the drift? Is this with another AD5560? If this is the case, a possibility is that the initially used AD5560 was thermally overstressed and damaged. Please refer to the AD5560 Datasheet Rev. E, Page 63 for information on thermal considerations. Also a technical reference relating to this would be the MS-2251 which goes into great detail about Thermal Considerations.

     

    Best Regards,

    Tom

  • 0
    •  Analog Employees 
    on Jul 26, 2016 4:53 PM

    Hi jChakuroff,

         I don't see any comments. Please repost

  • For the Measure out voltage to drift, you would usually suspect the thermal considerations of the AD5560 or the thermal drift of the DUT side, this dependent on which is consuming more power or generating more heat. For us to help you I may need additional info on how you are using the AD5560. Are you using the AD5560 Eval Board? (This could help me in correlating what you are seeing on bench)

    No. we have our own ATE (AXIe format) instrument.

    It has 12 AD5560 on it.

    We have been shipping this product for over four years.

    Volume has picked up significantly in the last 18 months.

    How do you mean by replacing the AD5560 eliminates the drift? Is this with another AD5560? If this is the case, a possibility is that the initially used AD5560 was thermally overstressed and damaged. Please refer to the AD5560 Datasheet Rev. E, Page 63 for information on thermal considerations. Also a technical reference relating to this would be the MS-2251 <https://ez.analog.com/external-link.jspa?url=http%3A%2F%2Fwww.analog.com%2Fmedia%2Fen%2Ftechnical-documentation%2Ftechnical-articles%2FMS-2251.pdf>  which goes into great detail about Thermal Considerations.

    Yes, we replaced suspect AD5560 with a new AD5560 (hand soldering)

    Thermally overstressed may be a possibility.

    Do you have any data or experience that this may be the case ?

    Have you used re-flow solder at xx’C and seen this issue ?

    However, our CM follows the guidelines as in the AD5560 datasheet.

    Thanks, we now have a copy of JEDEC spec also.

  • For the Measure out voltage to drift, you would usually suspect the thermal considerations of the AD5560 or the thermal drift of the DUT side, this dependent on which is consuming more power or generating more heat. For us to help you I may need additional info on how you are using the AD5560. Are you using the AD5560 Eval Board? (This could help me in correlating what you are seeing on bench)

    1. No. we have our own ATE (AXIe format) instrument.

    It has 12 AD5560 on it.

    We have been shipping this product for over four years.

    Volume has picked up significantly in the last 18 months.

    How do you mean by replacing the AD5560 eliminates the drift? Is this with another AD5560? If this is the case, a possibility is that the initially used AD5560 was thermally overstressed and damaged. Please refer to the AD5560 Datasheet Rev. E, Page 63 for information on thermal considerations. Also a technical reference relating to this would be the MS-2251 which goes into great detail about Thermal Considerations.

    Yes, we replaced suspect AD5560 with a new AD5560 (hand soldering)

    Thermally overstressed may be a possibility.

    Do you have any data or experience that this may be the case ?

    Have you used re-flow solder at xx’C and seen this issue ?

    However, our CM follows the guidelines as in the AD5560 datasheet.

    Thanks, we now have a copy of JEDEC spec also.