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TMP006/7 upper temperature limit and rate of change

Julian Cox
Prodigy 240 points
Other Parts Discussed in Thread: TMP006

Basically two questions concerning the TMP006/7.

1. Can I extend the upper temperature limit (in my case 155 degsC) by reducing the field of view and scaling the results?

2. The measured temperature can vary by up to 50degsC/min. what effect will this have on the measurement?

  • 0
    TI__Mastermind 37370 points
    Hi Julian,

    Let me know look into this, and get back to you.

    Aaron
  • 0 in reply to Aaron Heng
    TI__Mastermind 37370 points

    Hi Julian,

    Below is the answer to your question.

    1. Can I extend the upper temperature limit (in my case 155 degsC) by reducing the field of view and scaling the results?
    No, we only guarantee the operating temperature from -40°C to 125°C. Anything out of temperature range will not guarantee the performance of the device.

    2. The measured temperature can vary by up to 50degsC/min. what effect will this have on the measurement?
    We are really not concerned with the rate of change of the object as we are with the rate of change of the Local die temp. Unfortunately, usually TMP007 is very close to the object and its local temp is affected by changes in object temperature. If TMP007 die temperature starts changing rapidly this will create an error. This is where transient correction comes into play. It can help smooth fast ramps but will not fix the error overall. Reducing the sample rate, and averaging may help as well.

    Hope this helps!

    Aaron