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TMP007 Extended Range

Scott Orr
Prodigy 10 points

Other Parts Discussed in Thread: TMP006

We are planning to implement a TMP007 in a device that requires about a 12:1 Range to FOV ratio in order to measure the opposing wall temperature in a room, and I have the following questions:

Q1:  Can this be achieved  using the cover design  with resultant apertures of 0.30mm with the cover height of 4 mm. The math indicates this possible , but has this been reduced to practice. ( I only see very short range applications)

Q2: In our application , The TMP007 is mounted on a separate PCB with no other components ( heat sources) . Is their any additional thermal mass required ?

Q3: Assuming the TMP007 has a cover with a small aperture , do cross convection currents have any impact to the temperature reading ?

Q4 : Can you provide any information on any products that have implemented this sensor ?

Thx Scott

  • 0
    TI__Mastermind 46395 points
    Q1 We have only seen success with short range applications.
    Q2 A separate PCB is thermally beneficial for TMP007. It is also best practice to cover the device with a metal shield to protect from thermal events.
    Q3 All thermal events have the potential to disrupt the measurement. It depends on their magnitude.
    Q4 I'm sorry, I don't have any information I can share.

    For this application, I suggest using the through-hole layout seen on page 27 of TMP006 and TMP007 Layout and Assembly Guide. www.ti.com.cn/.../sbou143b.pdf

    Ren