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TMP006 addr pin connection

Jakub Wrobel
Prodigy 30 points
Other Parts Discussed in Thread: TMP006

Hello,

I just want to get confirmation: will TMP006 work if both addr pins are left not connected? Is it considered logic 0?

Best regards.

  • 0
    TI__Expert 7945 points

    Hello Jakub,

    Please don't leave them floating, you can connect them to Ground or V+.

    Regards,

    Abhi

  • 0 in reply to Abhishek Muppiri
    Prodigy 30 points

    Hello Abhi,

    thank You for your response. Although your answer is perfectly ok (I know it should be connected,  I don't have any soldering equipment available for two weeks), it is not answering my question. I made a test yesterday and it seems to be ok. I am able to talk to sensor, and read its ID registers correctly. However I did not make any sensible temperature readings yet. Temperature seems to be always around 350-512 Celsius (raw temp) and it does not react to me placing hand before sensor but I think it is not caused by the addr pin floating. I will make another thread should I still have problems with temp.

    Best regards.

  • 0 in reply to Jakub Wrobel
    TI__Intellectual 1811 points

    Jakub,

      As long as you understand that communication drop outs may be due to the address pins floating we can move on to the temperature problem.  We need to know how you soldered this part down.  It is intended for reflow.  if using a hot iron, it is possible to damage the sensor.  The sensor is very sensitive to touch and over heating.   When you get no response when you wave your hand over it, the first thing i suspect is sensor damage.  Can you read local temp correctly?

    Regards,

    Tommy Santoyo

     

  • 0 in reply to Tommy Santoyo
    Prodigy 30 points

    Hi Tommy,

    yes I do understand that n.c addr pins may cause connection interruptions due to static charges etc. However I am not experiencing such. Sensor has been manually soldered with hot air gun (tried to follow reflow curve as much as it can be done without reflow station) to board prepared more or less with guides suggestions. The local temperature reading oscillates between 350-512 C (but only shows a few values from this range e.g. 350,410,511,512) so I also suspect that sensor is damaged. Converting to Celsius is done properly as I tried values from datasheet as a test. In a week or so I will be back home so I will try another chip, and will be even more careful this time. I will write the results after that. Meanwhile thanks for the support for both of You.